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| version 1.1.2.5.2.9, 2003/04/01 13:48:32 | version 1.10, 2013/07/23 15:39:10 |
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| Line 1 | Line 1 |
| /** @file | /** @file |
| Parser: memory reference counting classes. | Parser: memory reference counting classes. |
| Copyright (c) 2001-2003 ArtLebedev Group (http://www.artlebedev.com) | Copyright (c) 2001-2012 Art. Lebedev Studio (http://www.artlebedev.com) |
| Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) | Author: Alexandr Petrosian <paf@design.ru> (http://paf.design.ru) |
| */ | */ |
| static const char* IDENT_MEMORY_C="$Date$"; | |
| #include "pa_sapi.h" | #include "pa_sapi.h" |
| #include "pa_common.h" | #include "pa_common.h" |
| volatile const char * IDENT_PA_MEMORY_C="$Id$" IDENT_PA_MEMORY_H; | |
| void *pa_fail_alloc(const char* what, size_t size) { | void *pa_fail_alloc(const char* what, size_t size) { |
| #ifdef PA_DEBUG_DISABLE_GC | #ifdef PA_DEBUG_DISABLE_GC |
| SAPI::abort("xx"); | SAPI::die("out of memory (in pa_fail_alloc)"); |
| #else | #else |
| SAPI::abort("out of memory: failed to %s %u bytes. " | SAPI::die("out of memory: failed to %s %u bytes. " |
| "heap_used=%lu, heap_free=%lu, bytes_since_gc=%lu, total_bytes=%lu", | "heap_used=%u, heap_free=%u, bytes_since_gc=%u, total_bytes=%u", |
| what, size, | what, size, |
| GC_get_heap_size(), | GC_get_heap_size(), |
| GC_get_free_bytes(), | GC_get_free_bytes(), |
| Line 26 void *pa_fail_alloc(const char* what, si | Line 26 void *pa_fail_alloc(const char* what, si |
| // never reached | // never reached |
| return 0; | return 0; |
| } | } |
| #ifdef PA_DEBUG_GC_MEMORY | |
| void bug() {} | |
| const size_t HEADTAIL_SIZE=4; | |
| static size_t debug_size(size_t user_size) { | |
| return user_size+HEADTAIL_SIZE*2; | |
| } | |
| const int BEFORE_MARK=0xBEF0BEF0; | |
| const int AFTER_MARK=0xAFEEAFEE; | |
| const char PAD_MARK='\xAD'; | |
| static void* fill_return_user(void* aptr, size_t pure_size) { | |
| char* ptr=(char*)aptr; | |
| memcpy(ptr, &BEFORE_MARK, HEADTAIL_SIZE); | |
| memcpy(ptr+pure_size-HEADTAIL_SIZE, &AFTER_MARK, HEADTAIL_SIZE); | |
| // pAD | |
| size_t raw_size=GC_size(aptr); | |
| for(size_t i=pure_size; i<raw_size; i++) | |
| ptr[i]=PAD_MARK; | |
| return ptr+HEADTAIL_SIZE; | |
| } | |
| static void* check_return_debug(void* auser_ptr) { | |
| char* user_ptr=(char*)auser_ptr; | |
| char* ptr=user_ptr-HEADTAIL_SIZE; | |
| size_t raw_size=GC_size(ptr); | |
| if(raw_size==0) | |
| bug(); | |
| size_t pure_size=raw_size; | |
| while(ptr[pure_size-1]==PAD_MARK) | |
| pure_size--; | |
| if(memcmp(ptr, &BEFORE_MARK, HEADTAIL_SIZE)!=0) | |
| bug(); | |
| if(memcmp(ptr+pure_size-HEADTAIL_SIZE, &AFTER_MARK, HEADTAIL_SIZE)!=0) | |
| bug(); | |
| return ptr; | |
| } | |
| void* pa_gc_malloc(size_t size) { | |
| size=debug_size(size); | |
| return fill_return_user(GC_MALLOC(size), size); | |
| } | |
| void* pa_gc_malloc_atomic(size_t size) { | |
| size=debug_size(size); | |
| return fill_return_user(GC_MALLOC_ATOMIC(size), size); | |
| } | |
| void* pa_gc_realloc(void* user_ptr, size_t size) { | |
| if(!GC_is_visible(user_ptr)) | |
| bug(); | |
| //printf("realloc: 0x%p -> %u\n", ptr, size); | |
| size=debug_size(size); | |
| return fill_return_user( | |
| GC_realloc( | |
| check_return_debug(user_ptr), | |
| size), | |
| size); | |
| } | |
| void pa_gc_free(void* ptr) { | |
| // ignore free | |
| } | |
| #endif |