118 lines
3.9 KiB
C
118 lines
3.9 KiB
C
/*
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* Author: David Robert Nadeau
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* Site: http://NadeauSoftware.com/
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* License: Creative Commons Attribution 3.0 Unported License
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* http://creativecommons.org/licenses/by/3.0/deed.en_US
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*/
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#if defined(_WIN32)
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#include <psapi.h>
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#include <windows.h>
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#elif defined(__unix__) || defined(__unix) || defined(unix) || \
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(defined(__APPLE__) && defined(__MACH__))
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#include <sys/resource.h>
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#include <unistd.h>
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#if defined(__APPLE__) && defined(__MACH__)
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#include <mach/mach.h>
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#elif (defined(_AIX) || defined(__TOS__AIX__)) || \
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(defined(__sun__) || defined(__sun) || \
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defined(sun) && (defined(__SVR4) || defined(__svr4__)))
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#include <fcntl.h>
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#include <procfs.h>
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#elif defined(__linux__) || defined(__linux) || defined(linux) || \
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defined(__gnu_linux__)
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#include <stdio.h>
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#endif
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#else
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#error "Cannot define getPeakRSS( ) or getCurrentRSS( ) for an unknown OS."
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#endif
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/**
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* Returns the peak (maximum so far) resident set size (physical
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* memory use) measured in bytes, or zero if the value cannot be
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* determined on this OS.
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*/
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inline size_t getPeakRSS() {
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#if defined(_WIN32)
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/* Windows -------------------------------------------------- */
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PROCESS_MEMORY_COUNTERS info;
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GetProcessMemoryInfo(GetCurrentProcess(), &info, sizeof(info));
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return (size_t)info.PeakWorkingSetSize;
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#elif (defined(_AIX) || defined(__TOS__AIX__)) || \
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(defined(__sun__) || defined(__sun) || \
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defined(sun) && (defined(__SVR4) || defined(__svr4__)))
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/* AIX and Solaris ------------------------------------------ */
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struct psinfo psinfo;
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int fd = -1;
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if ((fd = open("/proc/self/psinfo", O_RDONLY)) == -1)
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return (size_t)0L; /* Can't open? */
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if (read(fd, &psinfo, sizeof(psinfo)) != sizeof(psinfo)) {
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close(fd);
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return (size_t)0L; /* Can't read? */
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}
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close(fd);
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return (size_t)(psinfo.pr_rssize * 1024L);
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#elif defined(__unix__) || defined(__unix) || defined(unix) || \
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(defined(__APPLE__) && defined(__MACH__))
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/* BSD, Linux, and OSX -------------------------------------- */
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struct rusage rusage;
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getrusage(RUSAGE_SELF, &rusage);
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#if defined(__APPLE__) && defined(__MACH__)
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return (size_t)rusage.ru_maxrss;
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#else
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return (size_t)(rusage.ru_maxrss * 1024L);
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#endif
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#else
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/* Unknown OS ----------------------------------------------- */
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return (size_t)0L; /* Unsupported. */
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#endif
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}
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/**
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* Returns the current resident set size (physical memory use) measured
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* in bytes, or zero if the value cannot be determined on this OS.
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*/
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inline size_t getCurrentRSS() {
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#if defined(_WIN32)
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/* Windows -------------------------------------------------- */
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PROCESS_MEMORY_COUNTERS info;
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GetProcessMemoryInfo(GetCurrentProcess(), &info, sizeof(info));
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return (size_t)info.WorkingSetSize;
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#elif defined(__APPLE__) && defined(__MACH__)
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/* OSX ------------------------------------------------------ */
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struct mach_task_basic_info info;
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mach_msg_type_number_t infoCount = MACH_TASK_BASIC_INFO_COUNT;
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if (task_info(mach_task_self(), MACH_TASK_BASIC_INFO, (task_info_t)&info,
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&infoCount) != KERN_SUCCESS)
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return (size_t)0L; /* Can't access? */
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return (size_t)info.resident_size;
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#elif defined(__linux__) || defined(__linux) || defined(linux) || \
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defined(__gnu_linux__)
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/* Linux ---------------------------------------------------- */
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long rss = 0L;
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FILE *fp = NULL;
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if ((fp = fopen("/proc/self/statm", "r")) == NULL)
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return (size_t)0L; /* Can't open? */
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if (fscanf(fp, "%*s%ld", &rss) != 1) {
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fclose(fp);
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return (size_t)0L; /* Can't read? */
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}
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fclose(fp);
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return (size_t)rss * (size_t)sysconf(_SC_PAGESIZE);
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#else
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/* AIX, BSD, Solaris, and Unknown OS ------------------------ */
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return (size_t)0L; /* Unsupported. */
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#endif
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} |