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Manifest perftest: Also measure command evaluation time.

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This commit is contained in:
Nico Weber 2014-04-16 22:05:32 -07:00
parent 993803ed2a
commit 8d43f6ba5a
1 changed files with 31 additions and 5 deletions
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36
src/manifest_parser_perftest.cc
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@ -24,6 +24,7 @@
#endif
#include "disk_interface.h"
#include "graph.h"
#include "manifest_parser.h"
#include "metrics.h"
#include "state.h"
@ -46,11 +47,26 @@ bool WriteFakeManifests(const string& dir) {
return err == 0;
}
int main() {
int main(int argc, char* argv[]) {
bool measure_command_evaluation = true;
int opt;
while ((opt = getopt(argc, argv, const_cast<char*>("fh"))) != -1) {
switch (opt) {
case 'f':
measure_command_evaluation = false;
break;
case 'h':
default:
printf("usage: manifest_parser_perftest\n"
"\n"
"options:\n"
" -f only measure manifest load time, not command evaluation time\n"
);
return 1;
}
}
const char kManifestDir[] = "build/manifest_perftest";
RealFileReader file_reader;
vector<int> times;
string err;
if (!WriteFakeManifests(kManifestDir)) {
fprintf(stderr, "Failed to write test data\n");
@ -60,6 +76,9 @@ int main() {
chdir(kManifestDir);
const int kNumRepetitions = 5;
RealFileReader file_reader;
vector<int> times;
string err;
for (int i = 0; i < kNumRepetitions; ++i) {
int64_t start = GetTimeMillis();
@ -69,9 +88,16 @@ int main() {
fprintf(stderr, "Failed to read test data: %s\n", err.c_str());
return 1;
}
// Doing an empty build involves reading the manifest and evaluating all
// commands required for the requested targets. So include command
// evaluation in the perftest by default.
int optimization_guard = 0;
if (measure_command_evaluation)
for (size_t i = 0; i < state.edges_.size(); ++i)
optimization_guard += state.edges_[i]->EvaluateCommand().size();
int delta = (int)(GetTimeMillis() - start);
printf("%dms\n", delta);
printf("%dms (hash: %x)\n", delta, optimization_guard);
times.push_back(delta);
}