third-party/leptonica/prog/gifio_leaktest.c
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/*
* gifio_leaktest.c
*
* Contributed by Tom Powers.
*
* If gifio_leaktest is supplied with any argument the write testing will
* be skipped.
*
* Uses church.png to write and read church.gif 600 times
* to test for file handle leakage (which was a problem on Windows and
* MinGW). The Microsoft C Runtime Library has a limit of
* 512 open files as documented at "File Handling"
* https://msdn.microsoft.com/en-us/library/kdfaxaay(v=vs.90).aspx .
*/
#include "allheaders.h"
#define REPETITIONS 600
int main(int argc,
char **argv)
{
char *vers;
PIX *pixs;
l_int32 i;
l_int32 nWriteTries = REPETITIONS;
static char mainName[] = "gifio_leaktest";
vers = getLeptonicaVersion();
fprintf(stderr, "%s\n", vers);
FREE(vers);
vers = getImagelibVersions();
fprintf(stderr, "%s\n", vers);
FREE(vers);
if (argc > 2)
return ERROR_INT(" Syntax: gifio_leaktest [skipWriteTests]",
mainName, 1);
if (argc == 2)
nWriteTries = 0;
if ((pixs = pixRead("church.png")) == NULL)
return ERROR_INT("pix not found", mainName, 1);
for (i = 0; i < nWriteTries; i++) {
fprintf(stderr, "Writing attempt %d\n", i+1);
if (pixWrite("/tmp/church.gif", pixs, IFF_GIF)) {
fprintf(stderr, "Failed to write gif file on %dth try.\n", i+1);
break;
}
}
pixDestroy(&pixs);
if (i == REPETITIONS)
fprintf(stderr, "Successfully wrote gif file %d times.\n", i);
for (i = 0; i < REPETITIONS; i++) {
fprintf(stderr, "Reading attempt %d\n", i+1);
pixs = pixRead("/tmp/church.gif");
if (pixs == NULL) {
fprintf(stderr, "Failed to read gif file on %dth try.\n", i+1);
break;
} else {
pixDestroy(&pixs);
}
}
if (i == REPETITIONS)
fprintf(stderr, "Successfully read gif file %d times.\n", i);
return 0;
}