diff options
Diffstat (limited to 'openmp/runtime/src/kmp_stats_timing.cpp')
| -rw-r--r-- | openmp/runtime/src/kmp_stats_timing.cpp | 196 |
1 files changed, 92 insertions, 104 deletions
diff --git a/openmp/runtime/src/kmp_stats_timing.cpp b/openmp/runtime/src/kmp_stats_timing.cpp index 62cecc8926f..52d70fbf6e3 100644 --- a/openmp/runtime/src/kmp_stats_timing.cpp +++ b/openmp/runtime/src/kmp_stats_timing.cpp @@ -16,8 +16,8 @@ #include <stdlib.h> #include <unistd.h> -#include <iostream> #include <iomanip> +#include <iostream> #include <sstream> #include "kmp.h" @@ -26,119 +26,107 @@ using namespace std; #if KMP_HAVE_TICK_TIME -# if KMP_MIC -double tsc_tick_count::tick_time() -{ - // pretty bad assumption of 1GHz clock for MIC - return 1/((double)1000*1.e6); +#if KMP_MIC +double tsc_tick_count::tick_time() { + // pretty bad assumption of 1GHz clock for MIC + return 1 / ((double)1000 * 1.e6); } -# elif KMP_ARCH_X86 || KMP_ARCH_X86_64 -# include <string.h> +#elif KMP_ARCH_X86 || KMP_ARCH_X86_64 +#include <string.h> // Extract the value from the CPUID information -double tsc_tick_count::tick_time() -{ - static double result = 0.0; - - if (result == 0.0) - { - kmp_cpuid_t cpuinfo; - char brand[256]; - - __kmp_x86_cpuid(0x80000000, 0, &cpuinfo); - memset(brand, 0, sizeof(brand)); - int ids = cpuinfo.eax; - - for (unsigned int i=2; i<(ids^0x80000000)+2; i++) - __kmp_x86_cpuid(i | 0x80000000, 0, (kmp_cpuid_t*)(brand+(i-2)*sizeof(kmp_cpuid_t))); - - char * start = &brand[0]; - for (;*start == ' '; start++) - ; - - char * end = brand + KMP_STRLEN(brand) - 3; - uint64_t multiplier; - - if (*end == 'M') multiplier = 1000LL*1000LL; - else if (*end == 'G') multiplier = 1000LL*1000LL*1000LL; - else if (*end == 'T') multiplier = 1000LL*1000LL*1000LL*1000LL; - else - { - cout << "Error determining multiplier '" << *end << "'\n"; - exit (-1); - } - *end = 0; - while (*end != ' ') end--; - end++; - - double freq = strtod(end, &start); - if (freq == 0.0) - { - cout << "Error calculating frequency " << end << "\n"; - exit (-1); - } - - result = ((double)1.0)/(freq * multiplier); +double tsc_tick_count::tick_time() { + static double result = 0.0; + + if (result == 0.0) { + kmp_cpuid_t cpuinfo; + char brand[256]; + + __kmp_x86_cpuid(0x80000000, 0, &cpuinfo); + memset(brand, 0, sizeof(brand)); + int ids = cpuinfo.eax; + + for (unsigned int i = 2; i < (ids ^ 0x80000000) + 2; i++) + __kmp_x86_cpuid(i | 0x80000000, 0, + (kmp_cpuid_t *)(brand + (i - 2) * sizeof(kmp_cpuid_t))); + + char *start = &brand[0]; + for (; *start == ' '; start++) + ; + + char *end = brand + KMP_STRLEN(brand) - 3; + uint64_t multiplier; + + if (*end == 'M') + multiplier = 1000LL * 1000LL; + else if (*end == 'G') + multiplier = 1000LL * 1000LL * 1000LL; + else if (*end == 'T') + multiplier = 1000LL * 1000LL * 1000LL * 1000LL; + else { + cout << "Error determining multiplier '" << *end << "'\n"; + exit(-1); + } + *end = 0; + while (*end != ' ') + end--; + end++; + + double freq = strtod(end, &start); + if (freq == 0.0) { + cout << "Error calculating frequency " << end << "\n"; + exit(-1); } - return result; + + result = ((double)1.0) / (freq * multiplier); + } + return result; } -# endif +#endif #endif static bool useSI = true; // Return a formatted string after normalising the value into // engineering style and using a suitable unit prefix (e.g. ms, us, ns). -std::string formatSI(double interval, int width, char unit) -{ - std::stringstream os; - - if (useSI) - { - // Preserve accuracy for small numbers, since we only multiply and the positive powers - // of ten are precisely representable. - static struct { double scale; char prefix; } ranges[] = { - {1.e12,'f'}, - {1.e9, 'p'}, - {1.e6, 'n'}, - {1.e3, 'u'}, - {1.0, 'm'}, - {1.e-3,' '}, - {1.e-6,'k'}, - {1.e-9,'M'}, - {1.e-12,'G'}, - {1.e-15,'T'}, - {1.e-18,'P'}, - {1.e-21,'E'}, - {1.e-24,'Z'}, - {1.e-27,'Y'} - }; - - if (interval == 0.0) - { - os << std::setw(width-3) << std::right << "0.00" << std::setw(3) << unit; - return os.str(); - } - - bool negative = false; - if (interval < 0.0) - { - negative = true; - interval = -interval; - } - - for (int i=0; i<(int)(sizeof(ranges)/sizeof(ranges[0])); i++) - { - if (interval*ranges[i].scale < 1.e0) - { - interval = interval * 1000.e0 * ranges[i].scale; - os << std::fixed << std::setprecision(2) << std::setw(width-3) << std::right << - (negative ? -interval : interval) << std::setw(2) << ranges[i].prefix << std::setw(1) << unit; - - return os.str(); - } - } +std::string formatSI(double interval, int width, char unit) { + std::stringstream os; + + if (useSI) { + // Preserve accuracy for small numbers, since we only multiply and the + // positive powers of ten are precisely representable. + static struct { + double scale; + char prefix; + } ranges[] = {{1.e12, 'f'}, {1.e9, 'p'}, {1.e6, 'n'}, {1.e3, 'u'}, + {1.0, 'm'}, {1.e-3, ' '}, {1.e-6, 'k'}, {1.e-9, 'M'}, + {1.e-12, 'G'}, {1.e-15, 'T'}, {1.e-18, 'P'}, {1.e-21, 'E'}, + {1.e-24, 'Z'}, {1.e-27, 'Y'}}; + + if (interval == 0.0) { + os << std::setw(width - 3) << std::right << "0.00" << std::setw(3) + << unit; + return os.str(); + } + + bool negative = false; + if (interval < 0.0) { + negative = true; + interval = -interval; + } + + for (int i = 0; i < (int)(sizeof(ranges) / sizeof(ranges[0])); i++) { + if (interval * ranges[i].scale < 1.e0) { + interval = interval * 1000.e0 * ranges[i].scale; + os << std::fixed << std::setprecision(2) << std::setw(width - 3) + << std::right << (negative ? -interval : interval) << std::setw(2) + << ranges[i].prefix << std::setw(1) << unit; + + return os.str(); + } } - os << std::setprecision(2) << std::fixed << std::right << std::setw(width-3) << interval << std::setw(3) << unit; + } + os << std::setprecision(2) << std::fixed << std::right << std::setw(width - 3) + << interval << std::setw(3) << unit; - return os.str(); + return os.str(); } |
