mirrors/SDL
1
0
Fork 0
mirror of https://github.com/libsdl-org/SDL.git synced 2025-09-05 19:08:12 +00:00
Code Issues Packages Projects Releases Wiki Activity

SDL_test: track stack frames of allocations on Windows

Browse Source
This commit is contained in:
Anonymous Maarten
2023-09-01 23:19:46 +02:00
committed by Anonymous Maarten
parent 12c0be028e
commit f42bbeca24
1 changed files with 82 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

84
src/test/SDL_test_memory.c
View File

@@ -25,6 +25,26 @@
#include <libunwind.h>
#endif
#ifdef __WINDOWS__
#include <windows.h>
#include <dbghelp.h>
static void *s_dbghelp;
typedef BOOL (__stdcall *dbghelp_SymInitialize_fn)(HANDLE hProcess, PCSTR UserSearchPath, BOOL fInvadeProcess);
typedef BOOL (__stdcall *dbghelp_SymFromAddr_fn)(HANDLE hProcess, DWORD64 Address, PDWORD64 Displacement, PSYMBOL_INFO Symbol);
static dbghelp_SymFromAddr_fn dbghelp_SymFromAddr;
#ifdef _WIN64
typedef BOOL (__stdcall *dbghelp_SymGetLineFromAddr_fn)(HANDLE hProcess, DWORD64 qwAddr, PDWORD pdwDisplacement, PIMAGEHLP_LINE64 Line);
#else
typedef BOOL (__stdcall *dbghelp_SymGetLineFromAddr_fn)(HANDLE hProcess, DWORD qwAddr, PDWORD pdwDisplacement, PIMAGEHLP_LINE Line);
#endif
static dbghelp_SymGetLineFromAddr_fn dbghelp_SymGetLineFromAddr;
#endif
/* This is a simple tracking allocator to demonstrate the use of SDL's
memory allocation replacement functionality.
@@ -32,12 +52,14 @@
for production code.
*/
#define MAXIMUM_TRACKED_STACK_DEPTH 32
typedef struct SDL_tracked_allocation
{
void *mem;
size_t size;
Uint64 stack[10];
char stack_names[10][256];
Uint64 stack[MAXIMUM_TRACKED_STACK_DEPTH];
char stack_names[MAXIMUM_TRACKED_STACK_DEPTH][256];
struct SDL_tracked_allocation *next;
} SDL_tracked_allocation;
@@ -127,6 +149,40 @@ static void SDL_TrackAllocation(void *mem, size_t size)
}
}
}
#elif defined(__WINDOWS__)
{
Uint32 count;
PVOID frames[63];
Uint32 i;
count = CaptureStackBackTrace(1, SDL_arraysize(frames), frames, NULL);
entry->size = SDL_min(count, MAXIMUM_TRACKED_STACK_DEPTH);
for (i = 0; i < entry->size; i++) {
char symbol_buffer[sizeof(SYMBOL_INFO) + MAX_SYM_NAME * sizeof(TCHAR)];
PSYMBOL_INFO pSymbol = (PSYMBOL_INFO)symbol_buffer;
DWORD64 dwDisplacement = 0;
DWORD lineColumn = 0;
pSymbol->SizeOfStruct = sizeof(SYMBOL_INFO);
pSymbol->MaxNameLen = MAX_SYM_NAME;
IMAGEHLP_LINE line;
line.SizeOfStruct = sizeof(line);
entry->stack[i] = (Uint64)(uintptr_t)frames[i];
if (s_dbghelp) {
if (!dbghelp_SymFromAddr(GetCurrentProcess(), (DWORD64)(uintptr_t)frames[i], &dwDisplacement, pSymbol)) {
SDL_strlcpy(pSymbol->Name, "???", MAX_SYM_NAME);
dwDisplacement = 0;
}
if (!dbghelp_SymGetLineFromAddr(GetCurrentProcess(), (DWORD64)(uintptr_t)frames[i], &lineColumn, &line)) {
line.FileName = "";
line.LineNumber = 0;
}
SDL_snprintf(entry->stack_names[i], sizeof(entry->stack_names[i]), "%s+0x%llx %s:%u", pSymbol->Name, (unsigned long long)dwDisplacement, line.FileName, (Uint32)line.LineNumber);
}
}
}
#endif /* HAVE_LIBUNWIND_H */
entry->next = s_tracked_allocations[index];
@@ -235,6 +291,30 @@ void SDLTest_TrackAllocations(void)
if (s_previous_allocations != 0) {
SDL_Log("SDLTest_TrackAllocations(): There are %d previous allocations, disabling free() validation", s_previous_allocations);
}
#ifdef __WINDOWS__
{
s_dbghelp = SDL_LoadObject("dbghelp.dll");
if (s_dbghelp) {
dbghelp_SymInitialize_fn dbghelp_SymInitialize;
dbghelp_SymInitialize = (dbghelp_SymInitialize_fn)SDL_LoadFunction(s_dbghelp, "SymInitialize");
dbghelp_SymFromAddr = (dbghelp_SymFromAddr_fn)SDL_LoadFunction(s_dbghelp, "SymFromAddr");
#ifdef _WIN64
dbghelp_SymGetLineFromAddr = (dbghelp_SymGetLineFromAddr_fn)SDL_LoadFunction(s_dbghelp, "SymGetLineFromAddr64");
#else
dbghelp_SymGetLineFromAddr = (dbghelp_SymGetLineFromAddr_fn)SDL_LoadFunction(s_dbghelp, "SymGetLineFromAddr");
#endif
if (!dbghelp_SymFromAddr || !dbghelp_SymFromAddr || !dbghelp_SymGetLineFromAddr) {
SDL_UnloadObject(s_dbghelp);
s_dbghelp = NULL;
} else {
if (!dbghelp_SymInitialize(GetCurrentProcess(), NULL, TRUE)) {
SDL_UnloadObject(s_dbghelp);
s_dbghelp = NULL;
}
}
}
}
#endif
SDL_GetMemoryFunctions(&SDL_malloc_orig,
&SDL_calloc_orig,