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iostream: Add optional free_func pointer property to memory streams

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Fixes https://github.com/libsdl-org/SDL/issues/13368

Signed-off-by: Marcin Serwin <marcin@serwin.dev>
This commit is contained in:
Marcin Serwin
2025-07-16 20:21:41 +02:00
committed by Sam Lantinga
parent ee6d8f78f4
commit 8451ce86c1
3 changed files with 76 additions and 5 deletions
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52
test/testautomation_iostream.c
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@@ -312,6 +312,52 @@ static int SDLCALL iostrm_testConstMem(void *arg)
return TEST_COMPLETED;
}
static int free_call_count;
void SDLCALL test_free(void* mem) {
free_call_count++;
SDL_free(mem);
}
static int SDLCALL iostrm_testMemWithFree(void *arg)
{
void *mem;
SDL_IOStream *rw;
int result;
/* Allocate some memory */
mem = SDL_malloc(sizeof(IOStreamHelloWorldCompString) - 1);
if (mem == NULL) {
return TEST_ABORTED;
}
/* Open handle */
rw = SDL_IOFromMem(mem, sizeof(IOStreamHelloWorldCompString) - 1);
SDLTest_AssertPass("Call to SDL_IOFromMem() succeeded");
SDLTest_AssertCheck(rw != NULL, "Verify opening memory with SDL_IOFromMem does not return NULL");
/* Bail out if NULL */
if (rw == NULL) {
return TEST_ABORTED;
}
/* Set the free function */
free_call_count = 0;
result = SDL_SetPointerProperty(SDL_GetIOProperties(rw), SDL_PROP_IOSTREAM_MEMORY_FREE_FUNC, test_free);
SDLTest_AssertPass("Call to SDL_SetPointerProperty() succeeded");
SDLTest_AssertCheck(result == true, "Verify result value is true; got %d", result);
/* Run generic tests */
testGenericIOStreamValidations(rw, true);
/* Close handle */
result = SDL_CloseIO(rw);
SDLTest_AssertPass("Call to SDL_CloseIO() succeeded");
SDLTest_AssertCheck(result == true, "Verify result value is true; got: %d", result);
SDLTest_AssertCheck(free_call_count == 1, "Verify the custom free function was called once; call count: %d", free_call_count);
return TEST_COMPLETED;
}
/**
* Tests dynamic memory
*
@@ -686,10 +732,14 @@ static const SDLTest_TestCaseReference iostrmTest9 = {
iostrm_testCompareRWFromMemWithRWFromFile, "iostrm_testCompareRWFromMemWithRWFromFile", "Compare RWFromMem and RWFromFile IOStream for read and seek", TEST_ENABLED
};
static const SDLTest_TestCaseReference iostrmTest10 = {
iostrm_testMemWithFree, "iostrm_testMemWithFree", "Tests opening from memory with free on close", TEST_ENABLED
};
/* Sequence of IOStream test cases */
static const SDLTest_TestCaseReference *iostrmTests[] = {
&iostrmTest1, &iostrmTest2, &iostrmTest3, &iostrmTest4, &iostrmTest5, &iostrmTest6,
&iostrmTest7, &iostrmTest8, &iostrmTest9, NULL
&iostrmTest7, &iostrmTest8, &iostrmTest9, &iostrmTest10, NULL
};
/* IOStream test suite (global) */