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// ---
// Author: Craig Silverstein
//
// This tests ReadStackTraces and ReadGrowthStackTraces. It does this
// by doing a bunch of allocations and then calling those functions.
// A driver shell-script can call this, and then call pprof, and
// verify the expected output. The output is written to
// argv[1].heap and argv[1].growth
#include "config_for_unittests.h"
#include <stdio.h>
#include <stdlib.h>
#include <string>
#include "base/logging.h"
#include <gperftools/malloc_extension.h>
using std::string;
extern "C" void* AllocateAllocate() ATTRIBUTE_NOINLINE;
extern "C" void* AllocateAllocate() {
// The VLOG's are mostly to discourage inlining
VLOG(1, "Allocating some more");
void* p = malloc(10000);
VLOG(1, "Done allocating");
return p;
}
static void WriteStringToFile(const string& s, const string& filename) {
FILE* fp = fopen(filename.c_str(), "w");
fwrite(s.data(), 1, s.length(), fp);
fclose(fp);
}
int main(int argc, char** argv) {
if (argc < 2) {
fprintf(stderr, "USAGE: %s <base of output files>\n", argv[0]);
exit(1);
}
for (int i = 0; i < 8000; i++) {
AllocateAllocate();
}
string s;
MallocExtension::instance()->GetHeapSample(&s);
WriteStringToFile(s, string(argv[1]) + ".heap");
s.clear();
MallocExtension::instance()->GetHeapGrowthStacks(&s);
WriteStringToFile(s, string(argv[1]) + ".growth");
return 0;
}