| /* GLIB - Library of useful routines for C programming |
| * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| * Boston, MA 02111-1307, USA. |
| */ |
| |
| /* |
| * Modified by the GLib Team and others 1997-2000. See the AUTHORS |
| * file for a list of people on the GLib Team. See the ChangeLog |
| * files for a list of changes. These files are distributed with |
| * GLib at ftp://ftp.gtk.org/pub/gtk/. |
| */ |
| |
| /* |
| * MT safe |
| */ |
| |
| #include "config.h" |
| |
| #include "gmem.h" |
| |
| #include <stdlib.h> |
| #include <string.h> |
| #include <signal.h> |
| |
| #include "gbacktrace.h" |
| #include "gtestutils.h" |
| #include "gthread.h" |
| #include "glib_trace.h" |
| |
| |
| #define MEM_PROFILE_TABLE_SIZE 4096 |
| |
| |
| /* notes on macros: |
| * having G_DISABLE_CHECKS defined disables use of glib_mem_profiler_table and |
| * g_mem_profile(). |
| * REALLOC_0_WORKS is defined if g_realloc (NULL, x) works. |
| * SANE_MALLOC_PROTOS is defined if the systems malloc() and friends functions |
| * match the corresponding GLib prototypes, keep configure.ac and gmem.h in sync here. |
| * g_mem_gc_friendly is TRUE, freed memory should be 0-wiped. |
| */ |
| |
| /* --- prototypes --- */ |
| static gboolean g_mem_initialized = FALSE; |
| static void g_mem_init_nomessage (void); |
| |
| |
| /* --- malloc wrappers --- */ |
| #ifndef REALLOC_0_WORKS |
| static gpointer |
| standard_realloc (gpointer mem, |
| gsize n_bytes) |
| { |
| if (!mem) |
| return malloc (n_bytes); |
| else |
| return realloc (mem, n_bytes); |
| } |
| #endif /* !REALLOC_0_WORKS */ |
| |
| #ifdef SANE_MALLOC_PROTOS |
| # define standard_malloc malloc |
| # ifdef REALLOC_0_WORKS |
| # define standard_realloc realloc |
| # endif /* REALLOC_0_WORKS */ |
| # define standard_free free |
| # define standard_calloc calloc |
| # define standard_try_malloc malloc |
| # define standard_try_realloc realloc |
| #else /* !SANE_MALLOC_PROTOS */ |
| static gpointer |
| standard_malloc (gsize n_bytes) |
| { |
| return malloc (n_bytes); |
| } |
| # ifdef REALLOC_0_WORKS |
| static gpointer |
| standard_realloc (gpointer mem, |
| gsize n_bytes) |
| { |
| return realloc (mem, n_bytes); |
| } |
| # endif /* REALLOC_0_WORKS */ |
| static void |
| standard_free (gpointer mem) |
| { |
| free (mem); |
| } |
| static gpointer |
| standard_calloc (gsize n_blocks, |
| gsize n_bytes) |
| { |
| return calloc (n_blocks, n_bytes); |
| } |
| #define standard_try_malloc standard_malloc |
| #define standard_try_realloc standard_realloc |
| #endif /* !SANE_MALLOC_PROTOS */ |
| |
| |
| /* --- variables --- */ |
| static GMemVTable glib_mem_vtable = { |
| standard_malloc, |
| standard_realloc, |
| standard_free, |
| standard_calloc, |
| standard_try_malloc, |
| standard_try_realloc, |
| }; |
| |
| /** |
| * SECTION:memory |
| * @Short_Description: general memory-handling |
| * @Title: Memory Allocation |
| * |
| * These functions provide support for allocating and freeing memory. |
| * |
| * <note> |
| * If any call to allocate memory fails, the application is terminated. |
| * This also means that there is no need to check if the call succeeded. |
| * </note> |
| * |
| * <note> |
| * It's important to match g_malloc() with g_free(), plain malloc() with free(), |
| * and (if you're using C++) new with delete and new[] with delete[]. Otherwise |
| * bad things can happen, since these allocators may use different memory |
| * pools (and new/delete call constructors and destructors). See also |
| * g_mem_set_vtable(). |
| * </note> |
| */ |
| |
| /* --- functions --- */ |
| /** |
| * g_malloc: |
| * @n_bytes: the number of bytes to allocate |
| * |
| * Allocates @n_bytes bytes of memory. |
| * If @n_bytes is 0 it returns %NULL. |
| * |
| * Returns: a pointer to the allocated memory |
| */ |
| gpointer |
| g_malloc (gsize n_bytes) |
| { |
| if (G_UNLIKELY (!g_mem_initialized)) |
| g_mem_init_nomessage(); |
| if (G_LIKELY (n_bytes)) |
| { |
| gpointer mem; |
| |
| mem = glib_mem_vtable.malloc (n_bytes); |
| TRACE (GLIB_MEM_ALLOC((void*) mem, (unsigned int) n_bytes, 0, 0)); |
| if (mem) |
| return mem; |
| |
| g_error ("%s: failed to allocate %"G_GSIZE_FORMAT" bytes", |
| G_STRLOC, n_bytes); |
| } |
| |
| TRACE(GLIB_MEM_ALLOC((void*) NULL, (int) n_bytes, 0, 0)); |
| |
| return NULL; |
| } |
| |
| /** |
| * g_malloc0: |
| * @n_bytes: the number of bytes to allocate |
| * |
| * Allocates @n_bytes bytes of memory, initialized to 0's. |
| * If @n_bytes is 0 it returns %NULL. |
| * |
| * Returns: a pointer to the allocated memory |
| */ |
| gpointer |
| g_malloc0 (gsize n_bytes) |
| { |
| if (G_UNLIKELY (!g_mem_initialized)) |
| g_mem_init_nomessage(); |
| if (G_LIKELY (n_bytes)) |
| { |
| gpointer mem; |
| |
| mem = glib_mem_vtable.calloc (1, n_bytes); |
| TRACE (GLIB_MEM_ALLOC((void*) mem, (unsigned int) n_bytes, 1, 0)); |
| if (mem) |
| return mem; |
| |
| g_error ("%s: failed to allocate %"G_GSIZE_FORMAT" bytes", |
| G_STRLOC, n_bytes); |
| } |
| |
| TRACE(GLIB_MEM_ALLOC((void*) NULL, (int) n_bytes, 1, 0)); |
| |
| return NULL; |
| } |
| |
| /** |
| * g_realloc: |
| * @mem: the memory to reallocate |
| * @n_bytes: new size of the memory in bytes |
| * |
| * Reallocates the memory pointed to by @mem, so that it now has space for |
| * @n_bytes bytes of memory. It returns the new address of the memory, which may |
| * have been moved. @mem may be %NULL, in which case it's considered to |
| * have zero-length. @n_bytes may be 0, in which case %NULL will be returned |
| * and @mem will be freed unless it is %NULL. |
| * |
| * Returns: the new address of the allocated memory |
| */ |
| gpointer |
| g_realloc (gpointer mem, |
| gsize n_bytes) |
| { |
| gpointer newmem; |
| |
| if (G_UNLIKELY (!g_mem_initialized)) |
| g_mem_init_nomessage(); |
| if (G_LIKELY (n_bytes)) |
| { |
| newmem = glib_mem_vtable.realloc (mem, n_bytes); |
| TRACE (GLIB_MEM_REALLOC((void*) newmem, (void*)mem, (unsigned int) n_bytes, 0)); |
| if (newmem) |
| return newmem; |
| |
| g_error ("%s: failed to allocate %"G_GSIZE_FORMAT" bytes", |
| G_STRLOC, n_bytes); |
| } |
| |
| if (mem) |
| glib_mem_vtable.free (mem); |
| |
| TRACE (GLIB_MEM_REALLOC((void*) NULL, (void*)mem, 0, 0)); |
| |
| return NULL; |
| } |
| |
| /** |
| * g_free: |
| * @mem: the memory to free |
| * |
| * Frees the memory pointed to by @mem. |
| * If @mem is %NULL it simply returns. |
| */ |
| void |
| g_free (gpointer mem) |
| { |
| if (G_UNLIKELY (!g_mem_initialized)) |
| g_mem_init_nomessage(); |
| if (G_LIKELY (mem)) |
| glib_mem_vtable.free (mem); |
| TRACE(GLIB_MEM_FREE((void*) mem)); |
| } |
| |
| /** |
| * g_try_malloc: |
| * @n_bytes: number of bytes to allocate. |
| * |
| * Attempts to allocate @n_bytes, and returns %NULL on failure. |
| * Contrast with g_malloc(), which aborts the program on failure. |
| * |
| * Returns: the allocated memory, or %NULL. |
| */ |
| gpointer |
| g_try_malloc (gsize n_bytes) |
| { |
| gpointer mem; |
| |
| if (G_UNLIKELY (!g_mem_initialized)) |
| g_mem_init_nomessage(); |
| if (G_LIKELY (n_bytes)) |
| mem = glib_mem_vtable.try_malloc (n_bytes); |
| else |
| mem = NULL; |
| |
| TRACE (GLIB_MEM_ALLOC((void*) mem, (unsigned int) n_bytes, 0, 1)); |
| |
| return mem; |
| } |
| |
| /** |
| * g_try_malloc0: |
| * @n_bytes: number of bytes to allocate |
| * |
| * Attempts to allocate @n_bytes, initialized to 0's, and returns %NULL on |
| * failure. Contrast with g_malloc0(), which aborts the program on failure. |
| * |
| * Since: 2.8 |
| * Returns: the allocated memory, or %NULL |
| */ |
| gpointer |
| g_try_malloc0 (gsize n_bytes) |
| { |
| gpointer mem; |
| |
| if (G_UNLIKELY (!g_mem_initialized)) |
| g_mem_init_nomessage(); |
| if (G_LIKELY (n_bytes)) |
| mem = glib_mem_vtable.try_malloc (n_bytes); |
| else |
| mem = NULL; |
| |
| if (mem) |
| memset (mem, 0, n_bytes); |
| |
| return mem; |
| } |
| |
| /** |
| * g_try_realloc: |
| * @mem: previously-allocated memory, or %NULL. |
| * @n_bytes: number of bytes to allocate. |
| * |
| * Attempts to realloc @mem to a new size, @n_bytes, and returns %NULL |
| * on failure. Contrast with g_realloc(), which aborts the program |
| * on failure. If @mem is %NULL, behaves the same as g_try_malloc(). |
| * |
| * Returns: the allocated memory, or %NULL. |
| */ |
| gpointer |
| g_try_realloc (gpointer mem, |
| gsize n_bytes) |
| { |
| gpointer newmem; |
| |
| if (G_UNLIKELY (!g_mem_initialized)) |
| g_mem_init_nomessage(); |
| if (G_LIKELY (n_bytes)) |
| newmem = glib_mem_vtable.try_realloc (mem, n_bytes); |
| else |
| { |
| newmem = NULL; |
| if (mem) |
| glib_mem_vtable.free (mem); |
| } |
| |
| TRACE (GLIB_MEM_REALLOC((void*) newmem, (void*)mem, (unsigned int) n_bytes, 1)); |
| |
| return newmem; |
| } |
| |
| |
| #define SIZE_OVERFLOWS(a,b) (G_UNLIKELY ((b) > 0 && (a) > G_MAXSIZE / (b))) |
| |
| /** |
| * g_malloc_n: |
| * @n_blocks: the number of blocks to allocate |
| * @n_block_bytes: the size of each block in bytes |
| * |
| * This function is similar to g_malloc(), allocating (@n_blocks * @n_block_bytes) bytes, |
| * but care is taken to detect possible overflow during multiplication. |
| * |
| * Since: 2.24 |
| * Returns: a pointer to the allocated memory |
| */ |
| gpointer |
| g_malloc_n (gsize n_blocks, |
| gsize n_block_bytes) |
| { |
| if (SIZE_OVERFLOWS (n_blocks, n_block_bytes)) |
| { |
| if (G_UNLIKELY (!g_mem_initialized)) |
| g_mem_init_nomessage(); |
| |
| g_error ("%s: overflow allocating %"G_GSIZE_FORMAT"*%"G_GSIZE_FORMAT" bytes", |
| G_STRLOC, n_blocks, n_block_bytes); |
| } |
| |
| return g_malloc (n_blocks * n_block_bytes); |
| } |
| |
| /** |
| * g_malloc0_n: |
| * @n_blocks: the number of blocks to allocate |
| * @n_block_bytes: the size of each block in bytes |
| * |
| * This function is similar to g_malloc0(), allocating (@n_blocks * @n_block_bytes) bytes, |
| * but care is taken to detect possible overflow during multiplication. |
| * |
| * Since: 2.24 |
| * Returns: a pointer to the allocated memory |
| */ |
| gpointer |
| g_malloc0_n (gsize n_blocks, |
| gsize n_block_bytes) |
| { |
| if (SIZE_OVERFLOWS (n_blocks, n_block_bytes)) |
| { |
| if (G_UNLIKELY (!g_mem_initialized)) |
| g_mem_init_nomessage(); |
| |
| g_error ("%s: overflow allocating %"G_GSIZE_FORMAT"*%"G_GSIZE_FORMAT" bytes", |
| G_STRLOC, n_blocks, n_block_bytes); |
| } |
| |
| return g_malloc0 (n_blocks * n_block_bytes); |
| } |
| |
| /** |
| * g_realloc_n: |
| * @mem: the memory to reallocate |
| * @n_blocks: the number of blocks to allocate |
| * @n_block_bytes: the size of each block in bytes |
| * |
| * This function is similar to g_realloc(), allocating (@n_blocks * @n_block_bytes) bytes, |
| * but care is taken to detect possible overflow during multiplication. |
| * |
| * Since: 2.24 |
| * Returns: the new address of the allocated memory |
| */ |
| gpointer |
| g_realloc_n (gpointer mem, |
| gsize n_blocks, |
| gsize n_block_bytes) |
| { |
| if (SIZE_OVERFLOWS (n_blocks, n_block_bytes)) |
| { |
| if (G_UNLIKELY (!g_mem_initialized)) |
| g_mem_init_nomessage(); |
| |
| g_error ("%s: overflow allocating %"G_GSIZE_FORMAT"*%"G_GSIZE_FORMAT" bytes", |
| G_STRLOC, n_blocks, n_block_bytes); |
| } |
| |
| return g_realloc (mem, n_blocks * n_block_bytes); |
| } |
| |
| /** |
| * g_try_malloc_n: |
| * @n_blocks: the number of blocks to allocate |
| * @n_block_bytes: the size of each block in bytes |
| * |
| * This function is similar to g_try_malloc(), allocating (@n_blocks * @n_block_bytes) bytes, |
| * but care is taken to detect possible overflow during multiplication. |
| * |
| * Since: 2.24 |
| * Returns: the allocated memory, or %NULL. |
| */ |
| gpointer |
| g_try_malloc_n (gsize n_blocks, |
| gsize n_block_bytes) |
| { |
| if (SIZE_OVERFLOWS (n_blocks, n_block_bytes)) |
| return NULL; |
| |
| return g_try_malloc (n_blocks * n_block_bytes); |
| } |
| |
| /** |
| * g_try_malloc0_n: |
| * @n_blocks: the number of blocks to allocate |
| * @n_block_bytes: the size of each block in bytes |
| * |
| * This function is similar to g_try_malloc0(), allocating (@n_blocks * @n_block_bytes) bytes, |
| * but care is taken to detect possible overflow during multiplication. |
| * |
| * Since: 2.24 |
| * Returns: the allocated memory, or %NULL |
| */ |
| gpointer |
| g_try_malloc0_n (gsize n_blocks, |
| gsize n_block_bytes) |
| { |
| if (SIZE_OVERFLOWS (n_blocks, n_block_bytes)) |
| return NULL; |
| |
| return g_try_malloc0 (n_blocks * n_block_bytes); |
| } |
| |
| /** |
| * g_try_realloc_n: |
| * @mem: previously-allocated memory, or %NULL. |
| * @n_blocks: the number of blocks to allocate |
| * @n_block_bytes: the size of each block in bytes |
| * |
| * This function is similar to g_try_realloc(), allocating (@n_blocks * @n_block_bytes) bytes, |
| * but care is taken to detect possible overflow during multiplication. |
| * |
| * Since: 2.24 |
| * Returns: the allocated memory, or %NULL. |
| */ |
| gpointer |
| g_try_realloc_n (gpointer mem, |
| gsize n_blocks, |
| gsize n_block_bytes) |
| { |
| if (SIZE_OVERFLOWS (n_blocks, n_block_bytes)) |
| return NULL; |
| |
| return g_try_realloc (mem, n_blocks * n_block_bytes); |
| } |
| |
| |
| |
| static gpointer |
| fallback_calloc (gsize n_blocks, |
| gsize n_block_bytes) |
| { |
| gsize l = n_blocks * n_block_bytes; |
| gpointer mem = glib_mem_vtable.malloc (l); |
| |
| if (mem) |
| memset (mem, 0, l); |
| |
| return mem; |
| } |
| |
| static gboolean vtable_set = FALSE; |
| |
| /** |
| * g_mem_is_system_malloc |
| * |
| * Checks whether the allocator used by g_malloc() is the system's |
| * malloc implementation. If it returns %TRUE memory allocated with |
| * malloc() can be used interchangeable with memory allocated using g_malloc(). |
| * This function is useful for avoiding an extra copy of allocated memory returned |
| * by a non-GLib-based API. |
| * |
| * A different allocator can be set using g_mem_set_vtable(). |
| * |
| * Return value: if %TRUE, malloc() and g_malloc() can be mixed. |
| **/ |
| gboolean |
| g_mem_is_system_malloc (void) |
| { |
| return !vtable_set; |
| } |
| |
| /** |
| * g_mem_set_vtable: |
| * @vtable: table of memory allocation routines. |
| * |
| * Sets the #GMemVTable to use for memory allocation. You can use this to provide |
| * custom memory allocation routines. <emphasis>This function must be called |
| * before using any other GLib functions.</emphasis> The @vtable only needs to |
| * provide malloc(), realloc(), and free() functions; GLib can provide default |
| * implementations of the others. The malloc() and realloc() implementations |
| * should return %NULL on failure, GLib will handle error-checking for you. |
| * @vtable is copied, so need not persist after this function has been called. |
| */ |
| void |
| g_mem_set_vtable (GMemVTable *vtable) |
| { |
| if (!vtable_set) |
| { |
| if (vtable->malloc && vtable->realloc && vtable->free) |
| { |
| glib_mem_vtable.malloc = vtable->malloc; |
| glib_mem_vtable.realloc = vtable->realloc; |
| glib_mem_vtable.free = vtable->free; |
| glib_mem_vtable.calloc = vtable->calloc ? vtable->calloc : fallback_calloc; |
| glib_mem_vtable.try_malloc = vtable->try_malloc ? vtable->try_malloc : glib_mem_vtable.malloc; |
| glib_mem_vtable.try_realloc = vtable->try_realloc ? vtable->try_realloc : glib_mem_vtable.realloc; |
| vtable_set = TRUE; |
| } |
| else |
| g_warning (G_STRLOC ": memory allocation vtable lacks one of malloc(), realloc() or free()"); |
| } |
| else |
| g_warning (G_STRLOC ": memory allocation vtable can only be set once at startup"); |
| } |
| |
| |
| /* --- memory profiling and checking --- */ |
| #ifdef G_DISABLE_CHECKS |
| /** |
| * glib_mem_profiler_table: |
| * |
| * A #GMemVTable containing profiling variants of the memory |
| * allocation functions. Use them together with g_mem_profile() |
| * in order to get information about the memory allocation pattern |
| * of your program. |
| */ |
| GMemVTable *glib_mem_profiler_table = &glib_mem_vtable; |
| void |
| g_mem_profile (void) |
| { |
| } |
| #else /* !G_DISABLE_CHECKS */ |
| typedef enum { |
| PROFILER_FREE = 0, |
| PROFILER_ALLOC = 1, |
| PROFILER_RELOC = 2, |
| PROFILER_ZINIT = 4 |
| } ProfilerJob; |
| static guint *profile_data = NULL; |
| static gsize profile_allocs = 0; |
| static gsize profile_zinit = 0; |
| static gsize profile_frees = 0; |
| static GMutex *gmem_profile_mutex = NULL; |
| #ifdef G_ENABLE_DEBUG |
| static volatile gsize g_trap_free_size = 0; |
| static volatile gsize g_trap_realloc_size = 0; |
| static volatile gsize g_trap_malloc_size = 0; |
| #endif /* G_ENABLE_DEBUG */ |
| |
| #define PROFILE_TABLE(f1,f2,f3) ( ( ((f3) << 2) | ((f2) << 1) | (f1) ) * (MEM_PROFILE_TABLE_SIZE + 1)) |
| |
| static void |
| profiler_log (ProfilerJob job, |
| gsize n_bytes, |
| gboolean success) |
| { |
| g_mutex_lock (gmem_profile_mutex); |
| if (!profile_data) |
| { |
| profile_data = standard_calloc ((MEM_PROFILE_TABLE_SIZE + 1) * 8, |
| sizeof (profile_data[0])); |
| if (!profile_data) /* memory system kiddin' me, eh? */ |
| { |
| g_mutex_unlock (gmem_profile_mutex); |
| return; |
| } |
| } |
| |
| if (n_bytes < MEM_PROFILE_TABLE_SIZE) |
| profile_data[n_bytes + PROFILE_TABLE ((job & PROFILER_ALLOC) != 0, |
| (job & PROFILER_RELOC) != 0, |
| success != 0)] += 1; |
| else |
| profile_data[MEM_PROFILE_TABLE_SIZE + PROFILE_TABLE ((job & PROFILER_ALLOC) != 0, |
| (job & PROFILER_RELOC) != 0, |
| success != 0)] += 1; |
| if (success) |
| { |
| if (job & PROFILER_ALLOC) |
| { |
| profile_allocs += n_bytes; |
| if (job & PROFILER_ZINIT) |
| profile_zinit += n_bytes; |
| } |
| else |
| profile_frees += n_bytes; |
| } |
| g_mutex_unlock (gmem_profile_mutex); |
| } |
| |
| static void |
| profile_print_locked (guint *local_data, |
| gboolean success) |
| { |
| gboolean need_header = TRUE; |
| guint i; |
| |
| for (i = 0; i <= MEM_PROFILE_TABLE_SIZE; i++) |
| { |
| glong t_malloc = local_data[i + PROFILE_TABLE (1, 0, success)]; |
| glong t_realloc = local_data[i + PROFILE_TABLE (1, 1, success)]; |
| glong t_free = local_data[i + PROFILE_TABLE (0, 0, success)]; |
| glong t_refree = local_data[i + PROFILE_TABLE (0, 1, success)]; |
| |
| if (!t_malloc && !t_realloc && !t_free && !t_refree) |
| continue; |
| else if (need_header) |
| { |
| need_header = FALSE; |
| g_print (" blocks of | allocated | freed | allocated | freed | n_bytes \n"); |
| g_print (" n_bytes | n_times by | n_times by | n_times by | n_times by | remaining \n"); |
| g_print (" | malloc() | free() | realloc() | realloc() | \n"); |
| g_print ("===========|============|============|============|============|===========\n"); |
| } |
| if (i < MEM_PROFILE_TABLE_SIZE) |
| g_print ("%10u | %10ld | %10ld | %10ld | %10ld |%+11ld\n", |
| i, t_malloc, t_free, t_realloc, t_refree, |
| (t_malloc - t_free + t_realloc - t_refree) * i); |
| else if (i >= MEM_PROFILE_TABLE_SIZE) |
| g_print (" >%6u | %10ld | %10ld | %10ld | %10ld | ***\n", |
| i, t_malloc, t_free, t_realloc, t_refree); |
| } |
| if (need_header) |
| g_print (" --- none ---\n"); |
| } |
| |
| /** |
| * g_mem_profile: |
| * @void: |
| * |
| * Outputs a summary of memory usage. |
| * |
| * It outputs the frequency of allocations of different sizes, |
| * the total number of bytes which have been allocated, |
| * the total number of bytes which have been freed, |
| * and the difference between the previous two values, i.e. the number of bytes |
| * still in use. |
| * |
| * Note that this function will not output anything unless you have |
| * previously installed the #glib_mem_profiler_table with g_mem_set_vtable(). |
| */ |
| |
| void |
| g_mem_profile (void) |
| { |
| guint local_data[(MEM_PROFILE_TABLE_SIZE + 1) * 8 * sizeof (profile_data[0])]; |
| gsize local_allocs; |
| gsize local_zinit; |
| gsize local_frees; |
| |
| if (G_UNLIKELY (!g_mem_initialized)) |
| g_mem_init_nomessage(); |
| |
| g_mutex_lock (gmem_profile_mutex); |
| |
| local_allocs = profile_allocs; |
| local_zinit = profile_zinit; |
| local_frees = profile_frees; |
| |
| if (!profile_data) |
| { |
| g_mutex_unlock (gmem_profile_mutex); |
| return; |
| } |
| |
| memcpy (local_data, profile_data, |
| (MEM_PROFILE_TABLE_SIZE + 1) * 8 * sizeof (profile_data[0])); |
| |
| g_mutex_unlock (gmem_profile_mutex); |
| |
| g_print ("GLib Memory statistics (successful operations):\n"); |
| profile_print_locked (local_data, TRUE); |
| g_print ("GLib Memory statistics (failing operations):\n"); |
| profile_print_locked (local_data, FALSE); |
| g_print ("Total bytes: allocated=%"G_GSIZE_FORMAT", " |
| "zero-initialized=%"G_GSIZE_FORMAT" (%.2f%%), " |
| "freed=%"G_GSIZE_FORMAT" (%.2f%%), " |
| "remaining=%"G_GSIZE_FORMAT"\n", |
| local_allocs, |
| local_zinit, |
| ((gdouble) local_zinit) / local_allocs * 100.0, |
| local_frees, |
| ((gdouble) local_frees) / local_allocs * 100.0, |
| local_allocs - local_frees); |
| } |
| |
| static gpointer |
| profiler_try_malloc (gsize n_bytes) |
| { |
| gsize *p; |
| |
| #ifdef G_ENABLE_DEBUG |
| if (g_trap_malloc_size == n_bytes) |
| G_BREAKPOINT (); |
| #endif /* G_ENABLE_DEBUG */ |
| |
| p = standard_malloc (sizeof (gsize) * 2 + n_bytes); |
| |
| if (p) |
| { |
| p[0] = 0; /* free count */ |
| p[1] = n_bytes; /* length */ |
| profiler_log (PROFILER_ALLOC, n_bytes, TRUE); |
| p += 2; |
| } |
| else |
| profiler_log (PROFILER_ALLOC, n_bytes, FALSE); |
| |
| return p; |
| } |
| |
| static gpointer |
| profiler_malloc (gsize n_bytes) |
| { |
| gpointer mem = profiler_try_malloc (n_bytes); |
| |
| if (!mem) |
| g_mem_profile (); |
| |
| return mem; |
| } |
| |
| static gpointer |
| profiler_calloc (gsize n_blocks, |
| gsize n_block_bytes) |
| { |
| gsize l = n_blocks * n_block_bytes; |
| gsize *p; |
| |
| #ifdef G_ENABLE_DEBUG |
| if (g_trap_malloc_size == l) |
| G_BREAKPOINT (); |
| #endif /* G_ENABLE_DEBUG */ |
| |
| p = standard_calloc (1, sizeof (gsize) * 2 + l); |
| |
| if (p) |
| { |
| p[0] = 0; /* free count */ |
| p[1] = l; /* length */ |
| profiler_log (PROFILER_ALLOC | PROFILER_ZINIT, l, TRUE); |
| p += 2; |
| } |
| else |
| { |
| profiler_log (PROFILER_ALLOC | PROFILER_ZINIT, l, FALSE); |
| g_mem_profile (); |
| } |
| |
| return p; |
| } |
| |
| static void |
| profiler_free (gpointer mem) |
| { |
| gsize *p = mem; |
| |
| p -= 2; |
| if (p[0]) /* free count */ |
| { |
| g_warning ("free(%p): memory has been freed %"G_GSIZE_FORMAT" times already", |
| p + 2, p[0]); |
| profiler_log (PROFILER_FREE, |
| p[1], /* length */ |
| FALSE); |
| } |
| else |
| { |
| #ifdef G_ENABLE_DEBUG |
| if (g_trap_free_size == p[1]) |
| G_BREAKPOINT (); |
| #endif /* G_ENABLE_DEBUG */ |
| |
| profiler_log (PROFILER_FREE, |
| p[1], /* length */ |
| TRUE); |
| memset (p + 2, 0xaa, p[1]); |
| |
| /* for all those that miss standard_free (p); in this place, yes, |
| * we do leak all memory when profiling, and that is intentional |
| * to catch double frees. patch submissions are futile. |
| */ |
| } |
| p[0] += 1; |
| } |
| |
| static gpointer |
| profiler_try_realloc (gpointer mem, |
| gsize n_bytes) |
| { |
| gsize *p = mem; |
| |
| p -= 2; |
| |
| #ifdef G_ENABLE_DEBUG |
| if (g_trap_realloc_size == n_bytes) |
| G_BREAKPOINT (); |
| #endif /* G_ENABLE_DEBUG */ |
| |
| if (mem && p[0]) /* free count */ |
| { |
| g_warning ("realloc(%p, %"G_GSIZE_FORMAT"): " |
| "memory has been freed %"G_GSIZE_FORMAT" times already", |
| p + 2, (gsize) n_bytes, p[0]); |
| profiler_log (PROFILER_ALLOC | PROFILER_RELOC, n_bytes, FALSE); |
| |
| return NULL; |
| } |
| else |
| { |
| p = standard_realloc (mem ? p : NULL, sizeof (gsize) * 2 + n_bytes); |
| |
| if (p) |
| { |
| if (mem) |
| profiler_log (PROFILER_FREE | PROFILER_RELOC, p[1], TRUE); |
| p[0] = 0; |
| p[1] = n_bytes; |
| profiler_log (PROFILER_ALLOC | PROFILER_RELOC, p[1], TRUE); |
| p += 2; |
| } |
| else |
| profiler_log (PROFILER_ALLOC | PROFILER_RELOC, n_bytes, FALSE); |
| |
| return p; |
| } |
| } |
| |
| static gpointer |
| profiler_realloc (gpointer mem, |
| gsize n_bytes) |
| { |
| mem = profiler_try_realloc (mem, n_bytes); |
| |
| if (!mem) |
| g_mem_profile (); |
| |
| return mem; |
| } |
| |
| static GMemVTable profiler_table = { |
| profiler_malloc, |
| profiler_realloc, |
| profiler_free, |
| profiler_calloc, |
| profiler_try_malloc, |
| profiler_try_realloc, |
| }; |
| GMemVTable *glib_mem_profiler_table = &profiler_table; |
| |
| #endif /* !G_DISABLE_CHECKS */ |
| |
| /* --- MemChunks --- */ |
| /** |
| * SECTION:allocators |
| * @title: Memory Allocators |
| * @short_description: deprecated way to allocate chunks of memory for |
| * GList, GSList and GNode |
| * |
| * Prior to 2.10, #GAllocator was used as an efficient way to allocate |
| * small pieces of memory for use with the #GList, #GSList and #GNode |
| * data structures. Since 2.10, it has been completely replaced by the |
| * <link linkend="glib-Memory-Slices">slice allocator</link> and |
| * deprecated. |
| **/ |
| |
| /** |
| * SECTION:memory_chunks |
| * @title: Memory Chunks |
| * @short_description: deprecated way to allocate groups of equal-sized |
| * chunks of memory |
| * |
| * Memory chunks provide an space-efficient way to allocate equal-sized |
| * pieces of memory, called atoms. However, due to the administrative |
| * overhead (in particular for #G_ALLOC_AND_FREE, and when used from |
| * multiple threads), they are in practise often slower than direct use |
| * of g_malloc(). Therefore, memory chunks have been deprecated in |
| * favor of the <link linkend="glib-Memory-Slices">slice |
| * allocator</link>, which has been added in 2.10. All internal uses of |
| * memory chunks in GLib have been converted to the |
| * <literal>g_slice</literal> API. |
| * |
| * There are two types of memory chunks, #G_ALLOC_ONLY, and |
| * #G_ALLOC_AND_FREE. <itemizedlist> <listitem><para> #G_ALLOC_ONLY |
| * chunks only allow allocation of atoms. The atoms can never be freed |
| * individually. The memory chunk can only be free in its entirety. |
| * </para></listitem> <listitem><para> #G_ALLOC_AND_FREE chunks do |
| * allow atoms to be freed individually. The disadvantage of this is |
| * that the memory chunk has to keep track of which atoms have been |
| * freed. This results in more memory being used and a slight |
| * degradation in performance. </para></listitem> </itemizedlist> |
| * |
| * To create a memory chunk use g_mem_chunk_new() or the convenience |
| * macro g_mem_chunk_create(). |
| * |
| * To allocate a new atom use g_mem_chunk_alloc(), |
| * g_mem_chunk_alloc0(), or the convenience macros g_chunk_new() or |
| * g_chunk_new0(). |
| * |
| * To free an atom use g_mem_chunk_free(), or the convenience macro |
| * g_chunk_free(). (Atoms can only be freed if the memory chunk is |
| * created with the type set to #G_ALLOC_AND_FREE.) |
| * |
| * To free any blocks of memory which are no longer being used, use |
| * g_mem_chunk_clean(). To clean all memory chunks, use g_blow_chunks(). |
| * |
| * To reset the memory chunk, freeing all of the atoms, use |
| * g_mem_chunk_reset(). |
| * |
| * To destroy a memory chunk, use g_mem_chunk_destroy(). |
| * |
| * To help debug memory chunks, use g_mem_chunk_info() and |
| * g_mem_chunk_print(). |
| * |
| * <example> |
| * <title>Using a #GMemChunk</title> |
| * <programlisting> |
| * GMemChunk *mem_chunk; |
| * gchar *mem[10000]; |
| * gint i; |
| * |
| * /<!-- -->* Create a GMemChunk with atoms 50 bytes long, and memory |
| * blocks holding 100 bytes. Note that this means that only 2 atoms |
| * fit into each memory block and so isn't very efficient. *<!-- -->/ |
| * mem_chunk = g_mem_chunk_new ("test mem chunk", 50, 100, G_ALLOC_AND_FREE); |
| * /<!-- -->* Now allocate 10000 atoms. *<!-- -->/ |
| * for (i = 0; i < 10000; i++) |
| * { |
| * mem[i] = g_chunk_new (gchar, mem_chunk); |
| * /<!-- -->* Fill in the atom memory with some junk. *<!-- -->/ |
| * for (j = 0; j < 50; j++) |
| * mem[i][j] = i * j; |
| * } |
| * /<!-- -->* Now free all of the atoms. Note that since we are going to |
| * destroy the GMemChunk, this wouldn't normally be used. *<!-- -->/ |
| * for (i = 0; i < 10000; i++) |
| * { |
| * g_mem_chunk_free (mem_chunk, mem[i]); |
| * } |
| * /<!-- -->* We are finished with the GMemChunk, so we destroy it. *<!-- -->/ |
| * g_mem_chunk_destroy (mem_chunk); |
| * </programlisting> |
| * </example> |
| * |
| * <example> |
| * <title>Using a #GMemChunk with data structures</title> |
| * <programlisting> |
| * GMemChunk *array_mem_chunk; |
| * GRealArray *array; |
| * /<!-- -->* Create a GMemChunk to hold GRealArray structures, using |
| * the g_mem_chunk_create(<!-- -->) convenience macro. We want 1024 atoms in each |
| * memory block, and we want to be able to free individual atoms. *<!-- -->/ |
| * array_mem_chunk = g_mem_chunk_create (GRealArray, 1024, G_ALLOC_AND_FREE); |
| * /<!-- -->* Allocate one atom, using the g_chunk_new(<!-- -->) convenience macro. *<!-- -->/ |
| * array = g_chunk_new (GRealArray, array_mem_chunk); |
| * /<!-- -->* We can now use array just like a normal pointer to a structure. *<!-- -->/ |
| * array->data = NULL; |
| * array->len = 0; |
| * array->alloc = 0; |
| * array->zero_terminated = (zero_terminated ? 1 : 0); |
| * array->clear = (clear ? 1 : 0); |
| * array->elt_size = elt_size; |
| * /<!-- -->* We can free the element, so it can be reused. *<!-- -->/ |
| * g_chunk_free (array, array_mem_chunk); |
| * /<!-- -->* We destroy the GMemChunk when we are finished with it. *<!-- -->/ |
| * g_mem_chunk_destroy (array_mem_chunk); |
| * </programlisting> |
| * </example> |
| **/ |
| |
| #ifndef G_ALLOC_AND_FREE |
| |
| /** |
| * GAllocator: |
| * |
| * The #GAllocator struct contains private data. and should only be |
| * accessed using the following functions. |
| **/ |
| typedef struct _GAllocator GAllocator; |
| |
| /** |
| * GMemChunk: |
| * |
| * The #GMemChunk struct is an opaque data structure representing a |
| * memory chunk. It should be accessed only through the use of the |
| * following functions. |
| **/ |
| typedef struct _GMemChunk GMemChunk; |
| |
| /** |
| * G_ALLOC_ONLY: |
| * |
| * Specifies the type of a #GMemChunk. Used in g_mem_chunk_new() and |
| * g_mem_chunk_create() to specify that atoms will never be freed |
| * individually. |
| **/ |
| #define G_ALLOC_ONLY 1 |
| |
| /** |
| * G_ALLOC_AND_FREE: |
| * |
| * Specifies the type of a #GMemChunk. Used in g_mem_chunk_new() and |
| * g_mem_chunk_create() to specify that atoms will be freed |
| * individually. |
| **/ |
| #define G_ALLOC_AND_FREE 2 |
| #endif |
| |
| struct _GMemChunk { |
| guint alloc_size; /* the size of an atom */ |
| }; |
| |
| /** |
| * g_mem_chunk_new: |
| * @name: a string to identify the #GMemChunk. It is not copied so it |
| * should be valid for the lifetime of the #GMemChunk. It is |
| * only used in g_mem_chunk_print(), which is used for debugging. |
| * @atom_size: the size, in bytes, of each element in the #GMemChunk. |
| * @area_size: the size, in bytes, of each block of memory allocated to |
| * contain the atoms. |
| * @type: the type of the #GMemChunk. #G_ALLOC_AND_FREE is used if the |
| * atoms will be freed individually. #G_ALLOC_ONLY should be |
| * used if atoms will never be freed individually. |
| * #G_ALLOC_ONLY is quicker, since it does not need to track |
| * free atoms, but it obviously wastes memory if you no longer |
| * need many of the atoms. |
| * @Returns: the new #GMemChunk. |
| * |
| * Creates a new #GMemChunk. |
| * |
| * Deprecated:2.10: Use the <link linkend="glib-Memory-Slices">slice |
| * allocator</link> instead |
| **/ |
| GMemChunk* |
| g_mem_chunk_new (const gchar *name, |
| gint atom_size, |
| gsize area_size, |
| gint type) |
| { |
| GMemChunk *mem_chunk; |
| g_return_val_if_fail (atom_size > 0, NULL); |
| |
| mem_chunk = g_slice_new (GMemChunk); |
| mem_chunk->alloc_size = atom_size; |
| return mem_chunk; |
| } |
| |
| /** |
| * g_mem_chunk_destroy: |
| * @mem_chunk: a #GMemChunk. |
| * |
| * Frees all of the memory allocated for a #GMemChunk. |
| * |
| * Deprecated:2.10: Use the <link linkend="glib-Memory-Slices">slice |
| * allocator</link> instead |
| **/ |
| void |
| g_mem_chunk_destroy (GMemChunk *mem_chunk) |
| { |
| g_return_if_fail (mem_chunk != NULL); |
| |
| g_slice_free (GMemChunk, mem_chunk); |
| } |
| |
| /** |
| * g_mem_chunk_alloc: |
| * @mem_chunk: a #GMemChunk. |
| * @Returns: a pointer to the allocated atom. |
| * |
| * Allocates an atom of memory from a #GMemChunk. |
| * |
| * Deprecated:2.10: Use g_slice_alloc() instead |
| **/ |
| gpointer |
| g_mem_chunk_alloc (GMemChunk *mem_chunk) |
| { |
| g_return_val_if_fail (mem_chunk != NULL, NULL); |
| |
| return g_slice_alloc (mem_chunk->alloc_size); |
| } |
| |
| /** |
| * g_mem_chunk_alloc0: |
| * @mem_chunk: a #GMemChunk. |
| * @Returns: a pointer to the allocated atom. |
| * |
| * Allocates an atom of memory from a #GMemChunk, setting the memory to |
| * 0. |
| * |
| * Deprecated:2.10: Use g_slice_alloc0() instead |
| **/ |
| gpointer |
| g_mem_chunk_alloc0 (GMemChunk *mem_chunk) |
| { |
| g_return_val_if_fail (mem_chunk != NULL, NULL); |
| |
| return g_slice_alloc0 (mem_chunk->alloc_size); |
| } |
| |
| /** |
| * g_mem_chunk_free: |
| * @mem_chunk: a #GMemChunk. |
| * @mem: a pointer to the atom to free. |
| * |
| * Frees an atom in a #GMemChunk. This should only be called if the |
| * #GMemChunk was created with #G_ALLOC_AND_FREE. Otherwise it will |
| * simply return. |
| * |
| * Deprecated:2.10: Use g_slice_free1() instead |
| **/ |
| void |
| g_mem_chunk_free (GMemChunk *mem_chunk, |
| gpointer mem) |
| { |
| g_return_if_fail (mem_chunk != NULL); |
| |
| g_slice_free1 (mem_chunk->alloc_size, mem); |
| } |
| |
| /** |
| * g_mem_chunk_clean: |
| * @mem_chunk: a #GMemChunk. |
| * |
| * Frees any blocks in a #GMemChunk which are no longer being used. |
| * |
| * Deprecated:2.10: Use the <link linkend="glib-Memory-Slices">slice |
| * allocator</link> instead |
| **/ |
| void g_mem_chunk_clean (GMemChunk *mem_chunk) {} |
| |
| /** |
| * g_mem_chunk_reset: |
| * @mem_chunk: a #GMemChunk. |
| * |
| * Resets a GMemChunk to its initial state. It frees all of the |
| * currently allocated blocks of memory. |
| * |
| * Deprecated:2.10: Use the <link linkend="glib-Memory-Slices">slice |
| * allocator</link> instead |
| **/ |
| void g_mem_chunk_reset (GMemChunk *mem_chunk) {} |
| |
| |
| /** |
| * g_mem_chunk_print: |
| * @mem_chunk: a #GMemChunk. |
| * |
| * Outputs debugging information for a #GMemChunk. It outputs the name |
| * of the #GMemChunk (set with g_mem_chunk_new()), the number of bytes |
| * used, and the number of blocks of memory allocated. |
| * |
| * Deprecated:2.10: Use the <link linkend="glib-Memory-Slices">slice |
| * allocator</link> instead |
| **/ |
| void g_mem_chunk_print (GMemChunk *mem_chunk) {} |
| |
| |
| /** |
| * g_mem_chunk_info: |
| * |
| * Outputs debugging information for all #GMemChunk objects currently |
| * in use. It outputs the number of #GMemChunk objects currently |
| * allocated, and calls g_mem_chunk_print() to output information on |
| * each one. |
| * |
| * Deprecated:2.10: Use the <link linkend="glib-Memory-Slices">slice |
| * allocator</link> instead |
| **/ |
| void g_mem_chunk_info (void) {} |
| |
| /** |
| * g_blow_chunks: |
| * |
| * Calls g_mem_chunk_clean() on all #GMemChunk objects. |
| * |
| * Deprecated:2.10: Use the <link linkend="glib-Memory-Slices">slice |
| * allocator</link> instead |
| **/ |
| void g_blow_chunks (void) {} |
| |
| /** |
| * g_chunk_new0: |
| * @type: the type of the #GMemChunk atoms, typically a structure name. |
| * @chunk: a #GMemChunk. |
| * @Returns: a pointer to the allocated atom, cast to a pointer to |
| * @type. |
| * |
| * A convenience macro to allocate an atom of memory from a #GMemChunk. |
| * It calls g_mem_chunk_alloc0() and casts the returned atom to a |
| * pointer to the given type, avoiding a type cast in the source code. |
| * |
| * Deprecated:2.10: Use g_slice_new0() instead |
| **/ |
| |
| /** |
| * g_chunk_free: |
| * @mem: a pointer to the atom to be freed. |
| * @mem_chunk: a #GMemChunk. |
| * |
| * A convenience macro to free an atom of memory from a #GMemChunk. It |
| * simply switches the arguments and calls g_mem_chunk_free() It is |
| * included simply to complement the other convenience macros, |
| * g_chunk_new() and g_chunk_new0(). |
| * |
| * Deprecated:2.10: Use g_slice_free() instead |
| **/ |
| |
| /** |
| * g_chunk_new: |
| * @type: the type of the #GMemChunk atoms, typically a structure name. |
| * @chunk: a #GMemChunk. |
| * @Returns: a pointer to the allocated atom, cast to a pointer to |
| * @type. |
| * |
| * A convenience macro to allocate an atom of memory from a #GMemChunk. |
| * It calls g_mem_chunk_alloc() and casts the returned atom to a |
| * pointer to the given type, avoiding a type cast in the source code. |
| * |
| * Deprecated:2.10: Use g_slice_new() instead |
| **/ |
| |
| /** |
| * g_mem_chunk_create: |
| * @type: the type of the atoms, typically a structure name. |
| * @pre_alloc: the number of atoms to store in each block of memory. |
| * @alloc_type: the type of the #GMemChunk. #G_ALLOC_AND_FREE is used |
| * if the atoms will be freed individually. #G_ALLOC_ONLY |
| * should be used if atoms will never be freed |
| * individually. #G_ALLOC_ONLY is quicker, since it does |
| * not need to track free atoms, but it obviously wastes |
| * memory if you no longer need many of the atoms. |
| * @Returns: the new #GMemChunk. |
| * |
| * A convenience macro for creating a new #GMemChunk. It calls |
| * g_mem_chunk_new(), using the given type to create the #GMemChunk |
| * name. The atom size is determined using |
| * <function>sizeof()</function>, and the area size is calculated by |
| * multiplying the @pre_alloc parameter with the atom size. |
| * |
| * Deprecated:2.10: Use the <link linkend="glib-Memory-Slices">slice |
| * allocator</link> instead |
| **/ |
| |
| |
| /** |
| * g_allocator_new: |
| * @name: the name of the #GAllocator. This name is used to set the |
| * name of the #GMemChunk used by the #GAllocator, and is only |
| * used for debugging. |
| * @n_preallocs: the number of elements in each block of memory |
| * allocated. Larger blocks mean less calls to |
| * g_malloc(), but some memory may be wasted. (GLib uses |
| * 128 elements per block by default.) The value must be |
| * between 1 and 65535. |
| * @Returns: a new #GAllocator. |
| * |
| * Creates a new #GAllocator. |
| * |
| * Deprecated:2.10: Use the <link linkend="glib-Memory-Slices">slice |
| * allocator</link> instead |
| **/ |
| GAllocator* |
| g_allocator_new (const gchar *name, |
| guint n_preallocs) |
| { |
| static struct _GAllocator { |
| gchar *name; |
| guint16 n_preallocs; |
| guint is_unused : 1; |
| guint type : 4; |
| GAllocator *last; |
| GMemChunk *mem_chunk; |
| gpointer free_list; |
| } dummy = { |
| "GAllocator is deprecated", 1, TRUE, 0, NULL, NULL, NULL, |
| }; |
| /* some (broken) GAllocator uses depend on non-NULL allocators */ |
| return (void*) &dummy; |
| } |
| |
| /** |
| * g_allocator_free: |
| * @allocator: a #GAllocator. |
| * |
| * Frees all of the memory allocated by the #GAllocator. |
| * |
| * Deprecated:2.10: Use the <link linkend="glib-Memory-Slices">slice |
| * allocator</link> instead |
| **/ |
| void |
| g_allocator_free (GAllocator *allocator) |
| { |
| } |
| |
| #ifdef ENABLE_GC_FRIENDLY_DEFAULT |
| gboolean g_mem_gc_friendly = TRUE; |
| #else |
| /** |
| * g_mem_gc_friendly: |
| * |
| * This variable is %TRUE if the <envar>G_DEBUG</envar> environment variable |
| * includes the key <link linkend="G_DEBUG">gc-friendly</link>. |
| */ |
| gboolean g_mem_gc_friendly = FALSE; |
| #endif |
| |
| static void |
| g_mem_init_nomessage (void) |
| { |
| gchar buffer[1024]; |
| const gchar *val; |
| const GDebugKey keys[] = { |
| { "gc-friendly", 1 }, |
| }; |
| gint flags; |
| if (g_mem_initialized) |
| return; |
| /* don't use g_malloc/g_message here */ |
| val = _g_getenv_nomalloc ("G_DEBUG", buffer); |
| flags = !val ? 0 : g_parse_debug_string (val, keys, G_N_ELEMENTS (keys)); |
| if (flags & 1) /* gc-friendly */ |
| { |
| g_mem_gc_friendly = TRUE; |
| } |
| g_mem_initialized = TRUE; |
| } |
| |
| void |
| _g_mem_thread_init_noprivate_nomessage (void) |
| { |
| /* we may only create mutexes here, locking/ |
| * unlocking a mutex does not yet work. |
| */ |
| g_mem_init_nomessage(); |
| #ifndef G_DISABLE_CHECKS |
| gmem_profile_mutex = g_mutex_new (); |
| #endif |
| } |