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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-05 11:19:16 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-07-24 09:53:24 +0000 |
commit | b5f8ee61a7f7e9bd291dd26b0585d03eb686c941 (patch) | |
tree | d4d31289c39fc00da064a825df13a0b98ce95b10 /libnetdata/os.c | |
parent | Adding upstream version 1.44.3. (diff) | |
download | netdata-upstream.tar.xz netdata-upstream.zip |
Adding upstream version 1.46.3.upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libnetdata/os.c')
-rw-r--r-- | libnetdata/os.c | 300 |
1 files changed, 0 insertions, 300 deletions
diff --git a/libnetdata/os.c b/libnetdata/os.c deleted file mode 100644 index e4624be69..000000000 --- a/libnetdata/os.c +++ /dev/null @@ -1,300 +0,0 @@ -// SPDX-License-Identifier: GPL-3.0-or-later - -#include "os.h" - -// ---------------------------------------------------------------------------- -// system functions -// to retrieve settings of the system - -#define CPUS_FOR_COLLECTORS 0 -#define CPUS_FOR_NETDATA 1 - -long get_system_cpus_with_cache(bool cache, bool for_netdata) { - static long processors[2] = { 0, 0 }; - - int index = for_netdata ? CPUS_FOR_NETDATA : CPUS_FOR_COLLECTORS; - - if(likely(cache && processors[index] > 0)) - return processors[index]; - -#if defined(__APPLE__) || defined(__FreeBSD__) -#if defined(__APPLE__) -#define HW_CPU_NAME "hw.logicalcpu" -#else -#define HW_CPU_NAME "hw.ncpu" -#endif - - int32_t tmp_processors; - bool error = false; - - if (unlikely(GETSYSCTL_BY_NAME(HW_CPU_NAME, tmp_processors))) - error = true; - else - processors[index] = tmp_processors; - - if(processors[index] < 1) { - processors[index] = 1; - - if(error) - netdata_log_error("Assuming system has %d processors.", processors[index]); - } - - return processors[index]; -#else - - char filename[FILENAME_MAX + 1]; - snprintfz(filename, FILENAME_MAX, "%s/proc/stat", - (!for_netdata && netdata_configured_host_prefix) ? netdata_configured_host_prefix : ""); - - procfile *ff = procfile_open(filename, NULL, PROCFILE_FLAG_DEFAULT); - if(!ff) { - processors[index] = 1; - netdata_log_error("Cannot open file '%s'. Assuming system has %ld processors.", filename, processors[index]); - return processors[index]; - } - - ff = procfile_readall(ff); - if(!ff) { - processors[index] = 1; - netdata_log_error("Cannot open file '%s'. Assuming system has %ld processors.", filename, processors[index]); - return processors[index]; - } - - long tmp_processors = 0; - unsigned int i; - for(i = 0; i < procfile_lines(ff); i++) { - if(!procfile_linewords(ff, i)) continue; - - if(strncmp(procfile_lineword(ff, i, 0), "cpu", 3) == 0) - tmp_processors++; - } - procfile_close(ff); - - processors[index] = --tmp_processors; - - if(processors[index] < 1) - processors[index] = 1; - - netdata_log_debug(D_SYSTEM, "System has %ld processors.", processors[index]); - return processors[index]; - -#endif /* __APPLE__, __FreeBSD__ */ -} - -pid_t pid_max = 32768; -pid_t get_system_pid_max(void) { -#ifdef __APPLE__ - // As we currently do not know a solution to query pid_max from the os - // we use the number defined in bsd/sys/proc_internal.h in XNU sources - pid_max = 99999; - return pid_max; -#elif __FreeBSD__ - int32_t tmp_pid_max; - - if (unlikely(GETSYSCTL_BY_NAME("kern.pid_max", tmp_pid_max))) { - pid_max = 99999; - netdata_log_error("Assuming system's maximum pid is %d.", pid_max); - } else { - pid_max = tmp_pid_max; - } - - return pid_max; -#else - - static char read = 0; - if(unlikely(read)) return pid_max; - read = 1; - - char filename[FILENAME_MAX + 1]; - snprintfz(filename, FILENAME_MAX, "%s/proc/sys/kernel/pid_max", netdata_configured_host_prefix?netdata_configured_host_prefix:""); - - unsigned long long max = 0; - if(read_single_number_file(filename, &max) != 0) { - netdata_log_error("Cannot open file '%s'. Assuming system supports %d pids.", filename, pid_max); - return pid_max; - } - - if(!max) { - netdata_log_error("Cannot parse file '%s'. Assuming system supports %d pids.", filename, pid_max); - return pid_max; - } - - pid_max = (pid_t) max; - return pid_max; - -#endif /* __APPLE__, __FreeBSD__ */ -} - -unsigned int system_hz; -void get_system_HZ(void) { - long ticks; - - if ((ticks = sysconf(_SC_CLK_TCK)) == -1) { - netdata_log_error("Cannot get system clock ticks"); - } - - system_hz = (unsigned int) ticks; -} - -static inline unsigned long cpuset_str2ul(char **s) { - unsigned long n = 0; - char c; - for(c = **s; c >= '0' && c <= '9' ; c = *(++*s)) { - n *= 10; - n += c - '0'; - } - return n; -} - -unsigned long read_cpuset_cpus(const char *filename, long system_cpus) { - static char *buf = NULL; - static size_t buf_size = 0; - - if(!buf) { - buf_size = 100U + 6 * system_cpus; // taken from kernel/cgroup/cpuset.c - buf = mallocz(buf_size + 1); - } - - int ret = read_file(filename, buf, buf_size); - - if(!ret) { - char *s = buf; - unsigned long ncpus = 0; - - // parse the cpuset string and calculate the number of cpus the cgroup is allowed to use - while (*s) { - if (isspace(*s)) { - s++; - continue; - } - unsigned long n = cpuset_str2ul(&s); - ncpus++; - if(*s == ',') { - s++; - continue; - } - if(*s == '-') { - s++; - unsigned long m = cpuset_str2ul(&s); - ncpus += m - n; // calculate the number of cpus in the region - } - s++; - } - - if(!ncpus) - return 0; - - return ncpus; - } - - return 0; -} - -// ===================================================================================================================== -// FreeBSD - -#if __FreeBSD__ - -const char *os_type = "freebsd"; - -int getsysctl_by_name(const char *name, void *ptr, size_t len) { - size_t nlen = len; - - if (unlikely(sysctlbyname(name, ptr, &nlen, NULL, 0) == -1)) { - netdata_log_error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno)); - return 1; - } - if (unlikely(nlen != len)) { - netdata_log_error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen); - return 1; - } - return 0; -} - -int getsysctl_simple(const char *name, int *mib, size_t miblen, void *ptr, size_t len) { - size_t nlen = len; - - if (unlikely(!mib[0])) - if (unlikely(getsysctl_mib(name, mib, miblen))) - return 1; - - if (unlikely(sysctl(mib, miblen, ptr, &nlen, NULL, 0) == -1)) { - netdata_log_error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno)); - return 1; - } - if (unlikely(nlen != len)) { - netdata_log_error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen); - return 1; - } - - return 0; -} - -int getsysctl(const char *name, int *mib, size_t miblen, void *ptr, size_t *len) { - size_t nlen = *len; - - if (unlikely(!mib[0])) - if (unlikely(getsysctl_mib(name, mib, miblen))) - return 1; - - if (unlikely(sysctl(mib, miblen, ptr, len, NULL, 0) == -1)) { - netdata_log_error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno)); - return 1; - } - if (unlikely(ptr != NULL && nlen != *len)) { - netdata_log_error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)*len, (unsigned long)nlen); - return 1; - } - - return 0; -} - -int getsysctl_mib(const char *name, int *mib, size_t len) { - size_t nlen = len; - - if (unlikely(sysctlnametomib(name, mib, &nlen) == -1)) { - netdata_log_error("FREEBSD: sysctl(%s...) failed: %s", name, strerror(errno)); - return 1; - } - if (unlikely(nlen != len)) { - netdata_log_error("FREEBSD: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen); - return 1; - } - return 0; -} - - -#endif - - -// ===================================================================================================================== -// MacOS - -#if __APPLE__ - -const char *os_type = "macos"; - -int getsysctl_by_name(const char *name, void *ptr, size_t len) { - size_t nlen = len; - - if (unlikely(sysctlbyname(name, ptr, &nlen, NULL, 0) == -1)) { - netdata_log_error("MACOS: sysctl(%s...) failed: %s", name, strerror(errno)); - return 1; - } - if (unlikely(nlen != len)) { - netdata_log_error("MACOS: sysctl(%s...) expected %lu, got %lu", name, (unsigned long)len, (unsigned long)nlen); - return 1; - } - return 0; -} - -#endif - -// ===================================================================================================================== -// Linux - -#if __linux__ - -const char *os_type = "linux"; - -#endif |