dave/openttd
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Remove: rdtsc and TIC/TOC based on CPU ticks (#11856)

Browse Source 
Use TIC/TOC based on std::chrono instead. This information is also
easier to compare with others, as although it depends on CPU, it
means a bit more if "yours takes 4ms and mine takes 10ms".
This commit is contained in:
Patric Stout
2024-01-21 16:38:15 +01:00
committed by GitHub
parent fe035c306e
commit fa8294ebe7
3 changed files with 4 additions and 105 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
src/debug.h
View File

@@ -63,7 +63,8 @@ std::string GetDebugString();
/* Shorter form for passing filename and linenumber */
#define FILE_LINE __FILE__, __LINE__
/* Used for profiling
/**
* Used for profiling.
*
* Usage:
* TIC();
@@ -84,30 +85,14 @@ std::string GetDebugString();
* TIC() / TOC() creates its own block, so make sure not the mangle
* it with another block.
*
* The output is counted in CPU cycles, and not comparable across
* machines. Mainly useful for local optimisations.
* The output is counted in microseconds. Mainly useful for local optimisations.
**/
#define TIC() {\
uint64_t _xxx_ = ottd_rdtsc();\
static uint64_t _sum_ = 0;\
static uint32_t _i_ = 0;
#define TOC(str, count)\
_sum_ += ottd_rdtsc() - _xxx_;\
if (++_i_ == count) {\
Debug(misc, 0, "[{}] {} [avg: {:.1f}]", str, _sum_, _sum_/(double)_i_);\
_i_ = 0;\
_sum_ = 0;\
}\
}
/* Chrono based version. The output is in microseconds. */
#define TICC() {\
auto _start_ = std::chrono::high_resolution_clock::now();\
static uint64_t _sum_ = 0;\
static uint32_t _i_ = 0;
#define TOCC(str, _count_)\
#define TOC(str, _count_)\
_sum_ += (std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::high_resolution_clock::now() - _start_)).count();\
if (++_i_ == _count_) {\
Debug(misc, 0, "[{}] {} us [avg: {:.1f} us]", str, _sum_, _sum_/(double)_i_);\