#include "begin_code.h"
#include "close_code.h"

Include dependency graph for SDL_test_memory.h:

This graph shows which files directly or indirectly include this file:

Functions
int	SDLTest_TrackAllocations ()
	Start tracking SDL memory allocations.
void	SDLTest_LogAllocations ()
	Print a log of any outstanding allocations.

Detailed Description

Include file for SDL test framework.

This code is a part of the SDL2_test library, not the main SDL library.

Definition in file SDL_test_memory.h.

Function Documentation

void SDLTest_LogAllocations ( )

Print a log of any outstanding allocations.

Note: This can be called after SDL_Quit()

Definition at line 222 of file SDL_test_memory.c.

References ADD_LINE, SDL_tracked_allocation::next, NULL, SDL_arraysize, SDL_Log, SDL_malloc_orig, SDL_PRIx64, SDL_snprintf, SDL_strlcpy, SDL_tracked_allocation::size, SDL_tracked_allocation::stack, and SDL_tracked_allocation::stack_names.

Referenced by SDLTest_CommonQuit().

{
    char *message = NULL;
    size_t message_size = 0;
    char line[128], *tmp;
    SDL_tracked_allocation *entry;
    int index, count, stack_index;
    Uint64 total_allocated;
    if (!SDL_malloc_orig) {
        return;
    }
#define ADD_LINE() \
    message_size += (SDL_strlen(line) + 1); \
    tmp = (char *)SDL_realloc_orig(message, message_size); \
    if (!tmp) { \
        return; \
    } \
    message = tmp; \
    SDL_strlcat(message, line, message_size)
    SDL_strlcpy(line, "Memory allocations:\n", sizeof(line));
    ADD_LINE();
    SDL_strlcpy(line, "Expect 2 allocations from within SDL_GetErrBuf()\n", sizeof(line));
    ADD_LINE();
    count = 0;
    total_allocated = 0;
    for (index = 0; index < SDL_arraysize(s_tracked_allocations); ++index) {
        for (entry = s_tracked_allocations[index]; entry; entry = entry->next) {
            SDL_snprintf(line, sizeof(line), "Allocation %d: %d bytes\n", count, (int)entry->size);
            ADD_LINE();
            /* Start at stack index 1 to skip our tracking functions */
            for (stack_index = 1; stack_index < SDL_arraysize(entry->stack); ++stack_index) {
                if (!entry->stack[stack_index]) {
                    break;
                }
                SDL_snprintf(line, sizeof(line), "\t0x%"SDL_PRIx64": %s\n", entry->stack[stack_index], entry->stack_names[stack_index]);
                ADD_LINE();
            }
            total_allocated += entry->size;
            ++count;
        }
    }
    SDL_snprintf(line, sizeof(line), "Total: %.2f Kb in %d allocations\n", (float)total_allocated / 1024, count);
    ADD_LINE();
#undef ADD_LINE
    SDL_Log("%s", message);
}

int SDLTest_TrackAllocations ( )

Start tracking SDL memory allocations.

Note: This should be called before any other SDL functions for complete tracking coverage

Definition at line 197 of file SDL_test_memory.c.

References s_previous_allocations, SDL_calloc_orig, SDL_free_orig, SDL_GetMemoryFunctions, SDL_GetNumAllocations, SDL_Log, SDL_malloc_orig, SDL_realloc_orig, SDL_SetMemoryFunctions, SDLTest_Crc32Init(), SDLTest_TrackedCalloc(), SDLTest_TrackedFree(), SDLTest_TrackedMalloc(), and SDLTest_TrackedRealloc().

Referenced by SDLTest_CommonCreateState().

{
    if (SDL_malloc_orig) {
        return 0;
    }
    SDLTest_Crc32Init(&s_crc32_context);
    s_previous_allocations = SDL_GetNumAllocations();
    if (s_previous_allocations != 0) {
        SDL_Log("SDLTest_TrackAllocations(): There are %d previous allocations, disabling free() validation", s_previous_allocations);
    }
    SDL_GetMemoryFunctions(&SDL_malloc_orig,
                           &SDL_calloc_orig,
                           &SDL_realloc_orig,
                           &SDL_free_orig);
    SDL_SetMemoryFunctions(SDLTest_TrackedMalloc,
                           SDLTest_TrackedCalloc,
                           SDLTest_TrackedRealloc,
                           SDLTest_TrackedFree);
    return 0;
}