Calling initializeVkFFT causes memory leak #194
Description
Hello:
I have many different configurations for configuration.size[0] and configuration.numberBatches. I saved these configurations and repeatedly load them and call initializeVkFFT. However, I noticed that calling initializeVkFFT causes memory leaks. I wrote a test code and found that when configuration.size[0] = 9200 and configuration.numberBatches = 640, running it 10,000 times results in 1253.9MB of memory not being released.
`VkFFTResult testVkFFT(VkGPU* vkGPU)
{
int cols = 9200;
int rows = 640;
VkFFTConfiguration configuration = {};
VkFFTApplication app = { };
configuration.FFTdim = 1;
configuration.size[0] = cols;
configuration.numberBatches = rows;
configuration.device = &vkGPU->device();
configuration.context = &vkGPU->context();
uint64_t bufferSize = (uint64_t)4 * 2 * cols * rows;
configuration.bufferSize = &bufferSize;
configuration.loadApplicationFromString = 1;
if (configuration.loadApplicationFromString) {
FILE* kernelCache;
uint64_t str_len;
char fname[500];
int VkFFT_version = VkFFTGetVersion();
sprintf(fname, "vkFFT");
kernelCache = fopen(fname, "rb");
if (!kernelCache)
return VKFFT_ERROR_EMPTY_FILE;
fseek(kernelCache, 0, SEEK_END);
str_len = ftell(kernelCache);
fseek(kernelCache, 0, SEEK_SET);
configuration.loadApplicationString = malloc(str_len);
fread(configuration.loadApplicationString, str_len, 1, kernelCache);
fclose(kernelCache);
}
VkFFTResult resFFT = initializeVkFFT(&app, configuration);
if (resFFT != VKFFT_SUCCESS) {
return resFFT;
}
if (configuration.loadApplicationFromString) {
free(configuration.loadApplicationString);
}
deleteVkFFT(&app);
return VKFFT_SUCCESS;
}
saveVkFFT(&gpu);
int size = 10000;
for(int i=0; i<size; i++) {
showProgressBar(i, size);
testVkFFT(&gpu);
}
`