luke/verilator
1
0
Fork 0
mirror of https://github.com/verilator/verilator.git synced 2026-10-06 01:54:01 +02:00
Code Issues Packages Projects Releases Wiki Activity

Add performance information to --stats file.

Browse Source
This commit is contained in:
Wilson Snyder
2017-09-17 22:52:57 -04:00
parent 1e9e334929
commit 63361fc56e
64 changed files with 172 additions and 90 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/V3Os.cpp
+34
View File
@@ -22,6 +22,7 @@
#include "verilatedos.h"
#include <cstdarg>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include <dirent.h>
#include <unistd.h>
@@ -186,3 +187,36 @@ void V3Os::unlinkRegexp(const string& dir, const string& regexp) {
closedir(dirp);
}
}
//######################################################################
// METHODS (performance)
uint64_t V3Os::timeUsecs() {
#if defined(_WIN32) || defined(__MINGW32__)
return 0;
#else
timeval tv;
if (gettimeofday(&tv, NULL) < 0) return 0;
return static_cast<uint64_t>(tv.tv_sec)*1000000 + tv.tv_usec;
#endif
}
uint64_t V3Os::memUsageBytes() {
#if defined(_WIN32) || defined(__MINGW32__)
return 0;
#else
// Highly unportable. Sorry
const char* statmFilename = "/proc/self/statm";
FILE* fp = fopen(statmFilename,"r");
if (!fp) {
return 0;
}
uint64_t size, resident, share, text, lib, data, dt; // All in pages
if (7 != fscanf(fp, "%" VL_PRI64 "d %" VL_PRI64 "d %" VL_PRI64 "d %"
VL_PRI64 "d %" VL_PRI64 "d %" VL_PRI64 "d %" VL_PRI64 "d",
&size, &resident, &share, &text, &lib, &data, &dt)) {
return 0;
}
return (text + data) * getpagesize();
#endif
}