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authorDaniel Baumann <daniel.baumann@progress-linux.org>2018-11-07 12:22:44 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2018-11-07 12:22:44 +0000
commit1e6c93250172946eeb38e94a92a1fd12c9d3011e (patch)
tree8ca5e16dfc7ad6b3bf2738ca0a48408a950f8f7e /src/common.c
parentUpdate watch file (diff)
downloadnetdata-1e6c93250172946eeb38e94a92a1fd12c9d3011e.tar.xz
netdata-1e6c93250172946eeb38e94a92a1fd12c9d3011e.zip
Merging upstream version 1.11.0+dfsg.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/common.c')
-rw-r--r--src/common.c1361
1 files changed, 0 insertions, 1361 deletions
diff --git a/src/common.c b/src/common.c
deleted file mode 100644
index 94fd5e429..000000000
--- a/src/common.c
+++ /dev/null
@@ -1,1361 +0,0 @@
-#include "common.h"
-
-#ifdef __APPLE__
-#define INHERIT_NONE 0
-#endif /* __APPLE__ */
-#if defined(__FreeBSD__) || defined(__APPLE__)
-# define O_NOATIME 0
-# define MADV_DONTFORK INHERIT_NONE
-#endif /* __FreeBSD__ || __APPLE__*/
-
-char *netdata_configured_hostname = NULL;
-char *netdata_configured_config_dir = NULL;
-char *netdata_configured_log_dir = NULL;
-char *netdata_configured_plugins_dir = NULL;
-char *netdata_configured_web_dir = NULL;
-char *netdata_configured_cache_dir = NULL;
-char *netdata_configured_varlib_dir = NULL;
-char *netdata_configured_home_dir = NULL;
-char *netdata_configured_host_prefix = NULL;
-char *netdata_configured_timezone = NULL;
-
-struct rlimit rlimit_nofile = { .rlim_cur = 1024, .rlim_max = 1024 };
-int enable_ksm = 1;
-
-volatile sig_atomic_t netdata_exit = 0;
-const char *os_type = NETDATA_OS_TYPE;
-const char *program_version = VERSION;
-
-// ----------------------------------------------------------------------------
-// memory allocation functions that handle failures
-
-// although netdata does not use memory allocations too often (netdata tries to
-// maintain its memory footprint stable during runtime, i.e. all buffers are
-// allocated during initialization and are adapted to current use throughout
-// its lifetime), these can be used to override the default system allocation
-// routines.
-
-#ifdef NETDATA_LOG_ALLOCATIONS
-static struct memory_statistics {
- volatile size_t malloc_calls_made;
- volatile size_t calloc_calls_made;
- volatile size_t realloc_calls_made;
- volatile size_t strdup_calls_made;
- volatile size_t free_calls_made;
- volatile size_t memory_calls_made;
- volatile size_t allocated_memory;
- volatile size_t mmapped_memory;
-} memory_statistics;
-
-static inline void print_allocations(const char *file, const char *function, const unsigned long line) {
- static struct memory_statistics old = { 0, 0, 0, 0, 0, 0, 0, 0 };
-
- //if(unlikely(!(memory_statistics.memory_calls_made % 5))) {
- fprintf(stderr, "(%04lu@%-10.10s:%-15.15s): Allocated %zu KB (+%zu B), mmapped %zu KB (+%zu B): malloc %zu (+%zu), calloc %zu (+%zu), realloc %zu (+%zu), strdup %zu (+%zu), free %zu (+%zu)\n",
- line, file, function,
- (memory_statistics.allocated_memory + 512) / 1024, memory_statistics.allocated_memory - old.allocated_memory,
- (memory_statistics.mmapped_memory + 512) / 1024, memory_statistics.mmapped_memory - old.mmapped_memory,
- memory_statistics.malloc_calls_made, memory_statistics.malloc_calls_made - old.malloc_calls_made,
- memory_statistics.calloc_calls_made, memory_statistics.calloc_calls_made - old.calloc_calls_made,
- memory_statistics.realloc_calls_made, memory_statistics.realloc_calls_made - old.realloc_calls_made,
- memory_statistics.strdup_calls_made, memory_statistics.strdup_calls_made - old.strdup_calls_made,
- memory_statistics.free_calls_made, memory_statistics.free_calls_made - old.free_calls_made
- );
-
- memcpy(&old, &memory_statistics, sizeof(struct memory_statistics));
- //}
-}
-
-static inline void malloc_accounting(const char *file, const char *function, const unsigned long line, size_t size) {
-#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
- __atomic_fetch_add(&memory_statistics.memory_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.malloc_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.allocated_memory, size, __ATOMIC_SEQ_CST);
-#else
- // this is for debugging - we don't care locking it
- memory_statistics.memory_calls_made++;
- memory_statistics.malloc_calls_made++;
- memory_statistics.allocated_memory += size;
-#endif
- print_allocations(file, function, line);
-}
-
-static inline void mmap_accounting(size_t size) {
-#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
- __atomic_fetch_add(&memory_statistics.malloc_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.mmapped_memory, size, __ATOMIC_SEQ_CST);
-#else
- // this is for debugging - we don't care locking it
- memory_statistics.memory_calls_made++;
- memory_statistics.mmapped_memory += size;
-#endif
-}
-
-static inline void calloc_accounting(const char *file, const char *function, const unsigned long line, size_t size) {
-#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
- __atomic_fetch_add(&memory_statistics.memory_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.calloc_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.allocated_memory, size, __ATOMIC_SEQ_CST);
-#else
- // this is for debugging - we don't care locking it
- memory_statistics.memory_calls_made++;
- memory_statistics.calloc_calls_made++;
- memory_statistics.allocated_memory += size;
-#endif
- print_allocations(file, function, line);
-}
-
-static inline void realloc_accounting(const char *file, const char *function, const unsigned long line, void *ptr, size_t size) {
- (void)ptr;
-
-#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
- __atomic_fetch_add(&memory_statistics.memory_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.realloc_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.allocated_memory, size, __ATOMIC_SEQ_CST);
-#else
- // this is for debugging - we don't care locking it
- memory_statistics.memory_calls_made++;
- memory_statistics.realloc_calls_made++;
- memory_statistics.allocated_memory += size;
-#endif
- print_allocations(file, function, line);
-}
-
-static inline void strdup_accounting(const char *file, const char *function, const unsigned long line, const char *s) {
- size_t size = strlen(s) + 1;
-
-#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
- __atomic_fetch_add(&memory_statistics.memory_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.strdup_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.allocated_memory, size, __ATOMIC_SEQ_CST);
-#else
- // this is for debugging - we don't care locking it
- memory_statistics.memory_calls_made++;
- memory_statistics.strdup_calls_made++;
- memory_statistics.allocated_memory += size;
-#endif
- print_allocations(file, function, line);
-}
-
-static inline void free_accounting(const char *file, const char *function, const unsigned long line, void *ptr) {
- (void)file;
- (void)function;
- (void)line;
-
- if(likely(ptr)) {
-#if defined(HAVE_C___ATOMIC) && !defined(NETDATA_NO_ATOMIC_INSTRUCTIONS)
- __atomic_fetch_add(&memory_statistics.memory_calls_made, 1, __ATOMIC_SEQ_CST);
- __atomic_fetch_add(&memory_statistics.free_calls_made, 1, __ATOMIC_SEQ_CST);
-#else
- // this is for debugging - we don't care locking it
- memory_statistics.memory_calls_made++;
- memory_statistics.free_calls_made++;
-#endif
- }
-}
-#endif
-
-#ifdef NETDATA_LOG_ALLOCATIONS
-char *strdupz_int(const char *file, const char *function, const unsigned long line, const char *s) {
- strdup_accounting(file, function, line, s);
-#else
-char *strdupz(const char *s) {
-#endif
-
- char *t = strdup(s);
- if (unlikely(!t)) fatal("Cannot strdup() string '%s'", s);
- return t;
-}
-
-#ifdef NETDATA_LOG_ALLOCATIONS
-void *mallocz_int(const char *file, const char *function, const unsigned long line, size_t size) {
- malloc_accounting(file, function, line, size);
-#else
-void *mallocz(size_t size) {
-#endif
-
- void *p = malloc(size);
- if (unlikely(!p)) fatal("Cannot allocate %zu bytes of memory.", size);
- return p;
-}
-
-#ifdef NETDATA_LOG_ALLOCATIONS
-void *callocz_int(const char *file, const char *function, const unsigned long line, size_t nmemb, size_t size) {
- calloc_accounting(file, function, line, nmemb * size);
-#else
-void *callocz(size_t nmemb, size_t size) {
-#endif
-
- void *p = calloc(nmemb, size);
- if (unlikely(!p)) fatal("Cannot allocate %zu bytes of memory.", nmemb * size);
- return p;
-}
-
-#ifdef NETDATA_LOG_ALLOCATIONS
-void *reallocz_int(const char *file, const char *function, const unsigned long line, void *ptr, size_t size) {
- realloc_accounting(file, function, line, ptr, size);
-#else
-void *reallocz(void *ptr, size_t size) {
-#endif
-
- void *p = realloc(ptr, size);
- if (unlikely(!p)) fatal("Cannot re-allocate memory to %zu bytes.", size);
- return p;
-}
-
-#ifdef NETDATA_LOG_ALLOCATIONS
-void freez_int(const char *file, const char *function, const unsigned long line, void *ptr) {
- free_accounting(file, function, line, ptr);
-#else
-void freez(void *ptr) {
-#endif
-
- free(ptr);
-}
-
-void json_escape_string(char *dst, const char *src, size_t size) {
- const char *t;
- char *d = dst, *e = &dst[size - 1];
-
- for(t = src; *t && d < e ;t++) {
- if(unlikely(*t == '\\' || *t == '"')) {
- if(unlikely(d + 1 >= e)) break;
- *d++ = '\\';
- }
- *d++ = *t;
- }
-
- *d = '\0';
-}
-
-void json_fix_string(char *s) {
- unsigned char c;
- while((c = (unsigned char)*s)) {
- if(unlikely(c == '\\'))
- *s++ = '/';
- else if(unlikely(c == '"'))
- *s++ = '\'';
- else if(unlikely(isspace(c) || iscntrl(c)))
- *s++ = ' ';
- else if(unlikely(!isprint(c) || c > 127))
- *s++ = '_';
- else
- s++;
- }
-}
-
-int sleep_usec(usec_t usec) {
-
-#ifndef NETDATA_WITH_USLEEP
- // we expect microseconds (1.000.000 per second)
- // but timespec is nanoseconds (1.000.000.000 per second)
- struct timespec rem, req = {
- .tv_sec = (time_t) (usec / 1000000),
- .tv_nsec = (suseconds_t) ((usec % 1000000) * 1000)
- };
-
- while (nanosleep(&req, &rem) == -1) {
- if (likely(errno == EINTR)) {
- debug(D_SYSTEM, "nanosleep() interrupted (while sleeping for %llu microseconds).", usec);
- req.tv_sec = rem.tv_sec;
- req.tv_nsec = rem.tv_nsec;
- } else {
- error("Cannot nanosleep() for %llu microseconds.", usec);
- break;
- }
- }
-
- return 0;
-#else
- int ret = usleep(usec);
- if(unlikely(ret == -1 && errno == EINVAL)) {
- // on certain systems, usec has to be up to 999999
- if(usec > 999999) {
- int counter = usec / 999999;
- while(counter--)
- usleep(999999);
-
- usleep(usec % 999999);
- }
- else {
- error("Cannot usleep() for %llu microseconds.", usec);
- return ret;
- }
- }
-
- if(ret != 0)
- error("usleep() failed for %llu microseconds.", usec);
-
- return ret;
-#endif
-}
-
-unsigned char netdata_map_chart_names[256] = {
- [0] = '\0', //
- [1] = '_', //
- [2] = '_', //
- [3] = '_', //
- [4] = '_', //
- [5] = '_', //
- [6] = '_', //
- [7] = '_', //
- [8] = '_', //
- [9] = '_', //
- [10] = '_', //
- [11] = '_', //
- [12] = '_', //
- [13] = '_', //
- [14] = '_', //
- [15] = '_', //
- [16] = '_', //
- [17] = '_', //
- [18] = '_', //
- [19] = '_', //
- [20] = '_', //
- [21] = '_', //
- [22] = '_', //
- [23] = '_', //
- [24] = '_', //
- [25] = '_', //
- [26] = '_', //
- [27] = '_', //
- [28] = '_', //
- [29] = '_', //
- [30] = '_', //
- [31] = '_', //
- [32] = '_', //
- [33] = '_', // !
- [34] = '_', // "
- [35] = '_', // #
- [36] = '_', // $
- [37] = '_', // %
- [38] = '_', // &
- [39] = '_', // '
- [40] = '_', // (
- [41] = '_', // )
- [42] = '_', // *
- [43] = '_', // +
- [44] = '.', // ,
- [45] = '-', // -
- [46] = '.', // .
- [47] = '/', // /
- [48] = '0', // 0
- [49] = '1', // 1
- [50] = '2', // 2
- [51] = '3', // 3
- [52] = '4', // 4
- [53] = '5', // 5
- [54] = '6', // 6
- [55] = '7', // 7
- [56] = '8', // 8
- [57] = '9', // 9
- [58] = '_', // :
- [59] = '_', // ;
- [60] = '_', // <
- [61] = '_', // =
- [62] = '_', // >
- [63] = '_', // ?
- [64] = '_', // @
- [65] = 'a', // A
- [66] = 'b', // B
- [67] = 'c', // C
- [68] = 'd', // D
- [69] = 'e', // E
- [70] = 'f', // F
- [71] = 'g', // G
- [72] = 'h', // H
- [73] = 'i', // I
- [74] = 'j', // J
- [75] = 'k', // K
- [76] = 'l', // L
- [77] = 'm', // M
- [78] = 'n', // N
- [79] = 'o', // O
- [80] = 'p', // P
- [81] = 'q', // Q
- [82] = 'r', // R
- [83] = 's', // S
- [84] = 't', // T
- [85] = 'u', // U
- [86] = 'v', // V
- [87] = 'w', // W
- [88] = 'x', // X
- [89] = 'y', // Y
- [90] = 'z', // Z
- [91] = '_', // [
- [92] = '/', // backslash
- [93] = '_', // ]
- [94] = '_', // ^
- [95] = '_', // _
- [96] = '_', // `
- [97] = 'a', // a
- [98] = 'b', // b
- [99] = 'c', // c
- [100] = 'd', // d
- [101] = 'e', // e
- [102] = 'f', // f
- [103] = 'g', // g
- [104] = 'h', // h
- [105] = 'i', // i
- [106] = 'j', // j
- [107] = 'k', // k
- [108] = 'l', // l
- [109] = 'm', // m
- [110] = 'n', // n
- [111] = 'o', // o
- [112] = 'p', // p
- [113] = 'q', // q
- [114] = 'r', // r
- [115] = 's', // s
- [116] = 't', // t
- [117] = 'u', // u
- [118] = 'v', // v
- [119] = 'w', // w
- [120] = 'x', // x
- [121] = 'y', // y
- [122] = 'z', // z
- [123] = '_', // {
- [124] = '_', // |
- [125] = '_', // }
- [126] = '_', // ~
- [127] = '_', //
- [128] = '_', //
- [129] = '_', //
- [130] = '_', //
- [131] = '_', //
- [132] = '_', //
- [133] = '_', //
- [134] = '_', //
- [135] = '_', //
- [136] = '_', //
- [137] = '_', //
- [138] = '_', //
- [139] = '_', //
- [140] = '_', //
- [141] = '_', //
- [142] = '_', //
- [143] = '_', //
- [144] = '_', //
- [145] = '_', //
- [146] = '_', //
- [147] = '_', //
- [148] = '_', //
- [149] = '_', //
- [150] = '_', //
- [151] = '_', //
- [152] = '_', //
- [153] = '_', //
- [154] = '_', //
- [155] = '_', //
- [156] = '_', //
- [157] = '_', //
- [158] = '_', //
- [159] = '_', //
- [160] = '_', //
- [161] = '_', //
- [162] = '_', //
- [163] = '_', //
- [164] = '_', //
- [165] = '_', //
- [166] = '_', //
- [167] = '_', //
- [168] = '_', //
- [169] = '_', //
- [170] = '_', //
- [171] = '_', //
- [172] = '_', //
- [173] = '_', //
- [174] = '_', //
- [175] = '_', //
- [176] = '_', //
- [177] = '_', //
- [178] = '_', //
- [179] = '_', //
- [180] = '_', //
- [181] = '_', //
- [182] = '_', //
- [183] = '_', //
- [184] = '_', //
- [185] = '_', //
- [186] = '_', //
- [187] = '_', //
- [188] = '_', //
- [189] = '_', //
- [190] = '_', //
- [191] = '_', //
- [192] = '_', //
- [193] = '_', //
- [194] = '_', //
- [195] = '_', //
- [196] = '_', //
- [197] = '_', //
- [198] = '_', //
- [199] = '_', //
- [200] = '_', //
- [201] = '_', //
- [202] = '_', //
- [203] = '_', //
- [204] = '_', //
- [205] = '_', //
- [206] = '_', //
- [207] = '_', //
- [208] = '_', //
- [209] = '_', //
- [210] = '_', //
- [211] = '_', //
- [212] = '_', //
- [213] = '_', //
- [214] = '_', //
- [215] = '_', //
- [216] = '_', //
- [217] = '_', //
- [218] = '_', //
- [219] = '_', //
- [220] = '_', //
- [221] = '_', //
- [222] = '_', //
- [223] = '_', //
- [224] = '_', //
- [225] = '_', //
- [226] = '_', //
- [227] = '_', //
- [228] = '_', //
- [229] = '_', //
- [230] = '_', //
- [231] = '_', //
- [232] = '_', //
- [233] = '_', //
- [234] = '_', //
- [235] = '_', //
- [236] = '_', //
- [237] = '_', //
- [238] = '_', //
- [239] = '_', //
- [240] = '_', //
- [241] = '_', //
- [242] = '_', //
- [243] = '_', //
- [244] = '_', //
- [245] = '_', //
- [246] = '_', //
- [247] = '_', //
- [248] = '_', //
- [249] = '_', //
- [250] = '_', //
- [251] = '_', //
- [252] = '_', //
- [253] = '_', //
- [254] = '_', //
- [255] = '_' //
-};
-
-// make sure the supplied string
-// is good for a netdata chart/dimension ID/NAME
-void netdata_fix_chart_name(char *s) {
- while ((*s = netdata_map_chart_names[(unsigned char) *s])) s++;
-}
-
-unsigned char netdata_map_chart_ids[256] = {
- [0] = '\0', //
- [1] = '_', //
- [2] = '_', //
- [3] = '_', //
- [4] = '_', //
- [5] = '_', //
- [6] = '_', //
- [7] = '_', //
- [8] = '_', //
- [9] = '_', //
- [10] = '_', //
- [11] = '_', //
- [12] = '_', //
- [13] = '_', //
- [14] = '_', //
- [15] = '_', //
- [16] = '_', //
- [17] = '_', //
- [18] = '_', //
- [19] = '_', //
- [20] = '_', //
- [21] = '_', //
- [22] = '_', //
- [23] = '_', //
- [24] = '_', //
- [25] = '_', //
- [26] = '_', //
- [27] = '_', //
- [28] = '_', //
- [29] = '_', //
- [30] = '_', //
- [31] = '_', //
- [32] = '_', //
- [33] = '_', // !
- [34] = '_', // "
- [35] = '_', // #
- [36] = '_', // $
- [37] = '_', // %
- [38] = '_', // &
- [39] = '_', // '
- [40] = '_', // (
- [41] = '_', // )
- [42] = '_', // *
- [43] = '_', // +
- [44] = '.', // ,
- [45] = '-', // -
- [46] = '.', // .
- [47] = '_', // /
- [48] = '0', // 0
- [49] = '1', // 1
- [50] = '2', // 2
- [51] = '3', // 3
- [52] = '4', // 4
- [53] = '5', // 5
- [54] = '6', // 6
- [55] = '7', // 7
- [56] = '8', // 8
- [57] = '9', // 9
- [58] = '_', // :
- [59] = '_', // ;
- [60] = '_', // <
- [61] = '_', // =
- [62] = '_', // >
- [63] = '_', // ?
- [64] = '_', // @
- [65] = 'a', // A
- [66] = 'b', // B
- [67] = 'c', // C
- [68] = 'd', // D
- [69] = 'e', // E
- [70] = 'f', // F
- [71] = 'g', // G
- [72] = 'h', // H
- [73] = 'i', // I
- [74] = 'j', // J
- [75] = 'k', // K
- [76] = 'l', // L
- [77] = 'm', // M
- [78] = 'n', // N
- [79] = 'o', // O
- [80] = 'p', // P
- [81] = 'q', // Q
- [82] = 'r', // R
- [83] = 's', // S
- [84] = 't', // T
- [85] = 'u', // U
- [86] = 'v', // V
- [87] = 'w', // W
- [88] = 'x', // X
- [89] = 'y', // Y
- [90] = 'z', // Z
- [91] = '_', // [
- [92] = '/', // backslash
- [93] = '_', // ]
- [94] = '_', // ^
- [95] = '_', // _
- [96] = '_', // `
- [97] = 'a', // a
- [98] = 'b', // b
- [99] = 'c', // c
- [100] = 'd', // d
- [101] = 'e', // e
- [102] = 'f', // f
- [103] = 'g', // g
- [104] = 'h', // h
- [105] = 'i', // i
- [106] = 'j', // j
- [107] = 'k', // k
- [108] = 'l', // l
- [109] = 'm', // m
- [110] = 'n', // n
- [111] = 'o', // o
- [112] = 'p', // p
- [113] = 'q', // q
- [114] = 'r', // r
- [115] = 's', // s
- [116] = 't', // t
- [117] = 'u', // u
- [118] = 'v', // v
- [119] = 'w', // w
- [120] = 'x', // x
- [121] = 'y', // y
- [122] = 'z', // z
- [123] = '_', // {
- [124] = '_', // |
- [125] = '_', // }
- [126] = '_', // ~
- [127] = '_', //
- [128] = '_', //
- [129] = '_', //
- [130] = '_', //
- [131] = '_', //
- [132] = '_', //
- [133] = '_', //
- [134] = '_', //
- [135] = '_', //
- [136] = '_', //
- [137] = '_', //
- [138] = '_', //
- [139] = '_', //
- [140] = '_', //
- [141] = '_', //
- [142] = '_', //
- [143] = '_', //
- [144] = '_', //
- [145] = '_', //
- [146] = '_', //
- [147] = '_', //
- [148] = '_', //
- [149] = '_', //
- [150] = '_', //
- [151] = '_', //
- [152] = '_', //
- [153] = '_', //
- [154] = '_', //
- [155] = '_', //
- [156] = '_', //
- [157] = '_', //
- [158] = '_', //
- [159] = '_', //
- [160] = '_', //
- [161] = '_', //
- [162] = '_', //
- [163] = '_', //
- [164] = '_', //
- [165] = '_', //
- [166] = '_', //
- [167] = '_', //
- [168] = '_', //
- [169] = '_', //
- [170] = '_', //
- [171] = '_', //
- [172] = '_', //
- [173] = '_', //
- [174] = '_', //
- [175] = '_', //
- [176] = '_', //
- [177] = '_', //
- [178] = '_', //
- [179] = '_', //
- [180] = '_', //
- [181] = '_', //
- [182] = '_', //
- [183] = '_', //
- [184] = '_', //
- [185] = '_', //
- [186] = '_', //
- [187] = '_', //
- [188] = '_', //
- [189] = '_', //
- [190] = '_', //
- [191] = '_', //
- [192] = '_', //
- [193] = '_', //
- [194] = '_', //
- [195] = '_', //
- [196] = '_', //
- [197] = '_', //
- [198] = '_', //
- [199] = '_', //
- [200] = '_', //
- [201] = '_', //
- [202] = '_', //
- [203] = '_', //
- [204] = '_', //
- [205] = '_', //
- [206] = '_', //
- [207] = '_', //
- [208] = '_', //
- [209] = '_', //
- [210] = '_', //
- [211] = '_', //
- [212] = '_', //
- [213] = '_', //
- [214] = '_', //
- [215] = '_', //
- [216] = '_', //
- [217] = '_', //
- [218] = '_', //
- [219] = '_', //
- [220] = '_', //
- [221] = '_', //
- [222] = '_', //
- [223] = '_', //
- [224] = '_', //
- [225] = '_', //
- [226] = '_', //
- [227] = '_', //
- [228] = '_', //
- [229] = '_', //
- [230] = '_', //
- [231] = '_', //
- [232] = '_', //
- [233] = '_', //
- [234] = '_', //
- [235] = '_', //
- [236] = '_', //
- [237] = '_', //
- [238] = '_', //
- [239] = '_', //
- [240] = '_', //
- [241] = '_', //
- [242] = '_', //
- [243] = '_', //
- [244] = '_', //
- [245] = '_', //
- [246] = '_', //
- [247] = '_', //
- [248] = '_', //
- [249] = '_', //
- [250] = '_', //
- [251] = '_', //
- [252] = '_', //
- [253] = '_', //
- [254] = '_', //
- [255] = '_' //
-};
-
-// make sure the supplied string
-// is good for a netdata chart/dimension ID/NAME
-void netdata_fix_chart_id(char *s) {
- while ((*s = netdata_map_chart_ids[(unsigned char) *s])) s++;
-}
-
-/*
-// http://stackoverflow.com/questions/7666509/hash-function-for-string
-uint32_t simple_hash(const char *name)
-{
- const char *s = name;
- uint32_t hash = 5381;
- int i;
-
- while((i = *s++)) hash = ((hash << 5) + hash) + i;
-
- // fprintf(stderr, "HASH: %lu %s\n", hash, name);
-
- return hash;
-}
-*/
-
-/*
-// http://isthe.com/chongo/tech/comp/fnv/#FNV-1a
-uint32_t simple_hash(const char *name) {
- unsigned char *s = (unsigned char *) name;
- uint32_t hval = 0x811c9dc5;
-
- // FNV-1a algorithm
- while (*s) {
- // multiply by the 32 bit FNV magic prime mod 2^32
- // NOTE: No need to optimize with left shifts.
- // GCC will use imul instruction anyway.
- // Tested with 'gcc -O3 -S'
- //hval += (hval<<1) + (hval<<4) + (hval<<7) + (hval<<8) + (hval<<24);
- hval *= 16777619;
-
- // xor the bottom with the current octet
- hval ^= (uint32_t) *s++;
- }
-
- // fprintf(stderr, "HASH: %u = %s\n", hval, name);
- return hval;
-}
-
-uint32_t simple_uhash(const char *name) {
- unsigned char *s = (unsigned char *) name;
- uint32_t hval = 0x811c9dc5, c;
-
- // FNV-1a algorithm
- while ((c = *s++)) {
- if (unlikely(c >= 'A' && c <= 'Z')) c += 'a' - 'A';
- hval *= 16777619;
- hval ^= c;
- }
- return hval;
-}
-*/
-
-/*
-// http://eternallyconfuzzled.com/tuts/algorithms/jsw_tut_hashing.aspx
-// one at a time hash
-uint32_t simple_hash(const char *name) {
- unsigned char *s = (unsigned char *)name;
- uint32_t h = 0;
-
- while(*s) {
- h += *s++;
- h += (h << 10);
- h ^= (h >> 6);
- }
-
- h += (h << 3);
- h ^= (h >> 11);
- h += (h << 15);
-
- // fprintf(stderr, "HASH: %u = %s\n", h, name);
-
- return h;
-}
-*/
-
-void strreverse(char *begin, char *end) {
- while (end > begin) {
- // clearer code.
- char aux = *end;
- *end-- = *begin;
- *begin++ = aux;
- }
-}
-
-char *strsep_on_1char(char **ptr, char c) {
- if(unlikely(!ptr || !*ptr))
- return NULL;
-
- // remember the position we started
- char *s = *ptr;
-
- // skip separators in front
- while(*s == c) s++;
- char *ret = s;
-
- // find the next separator
- while(*s++) {
- if(unlikely(*s == c)) {
- *s++ = '\0';
- *ptr = s;
- return ret;
- }
- }
-
- *ptr = NULL;
- return ret;
-}
-
-char *mystrsep(char **ptr, char *s) {
- char *p = "";
- while (p && !p[0] && *ptr) p = strsep(ptr, s);
- return (p);
-}
-
-char *trim(char *s) {
- // skip leading spaces
- while (*s && isspace(*s)) s++;
- if (!*s) return NULL;
-
- // skip tailing spaces
- // this way is way faster. Writes only one NUL char.
- ssize_t l = strlen(s);
- if (--l >= 0) {
- char *p = s + l;
- while (p > s && isspace(*p)) p--;
- *++p = '\0';
- }
-
- if (!*s) return NULL;
-
- return s;
-}
-
-inline char *trim_all(char *buffer) {
- char *d = buffer, *s = buffer;
-
- // skip spaces
- while(isspace(*s)) s++;
-
- while(*s) {
- // copy the non-space part
- while(*s && !isspace(*s)) *d++ = *s++;
-
- // add a space if we have to
- if(*s && isspace(*s)) {
- *d++ = ' ';
- s++;
- }
-
- // skip spaces
- while(isspace(*s)) s++;
- }
-
- *d = '\0';
-
- if(d > buffer) {
- d--;
- if(isspace(*d)) *d = '\0';
- }
-
- if(!buffer[0]) return NULL;
- return buffer;
-}
-
-static int memory_file_open(const char *filename, size_t size) {
- // info("memory_file_open('%s', %zu", filename, size);
-
- int fd = open(filename, O_RDWR | O_CREAT | O_NOATIME, 0664);
- if (fd != -1) {
- if (lseek(fd, size, SEEK_SET) == (off_t) size) {
- if (write(fd, "", 1) == 1) {
- if (ftruncate(fd, size))
- error("Cannot truncate file '%s' to size %zu. Will use the larger file.", filename, size);
- }
- else error("Cannot write to file '%s' at position %zu.", filename, size);
- }
- else error("Cannot seek file '%s' to size %zu.", filename, size);
- }
- else error("Cannot create/open file '%s'.", filename);
-
- return fd;
-}
-
-// mmap_shared is used for memory mode = map
-static void *memory_file_mmap(const char *filename, size_t size, int flags) {
- // info("memory_file_mmap('%s', %zu", filename, size);
- static int log_madvise = 1;
-
- int fd = -1;
- if(filename) {
- fd = memory_file_open(filename, size);
- if(fd == -1) return MAP_FAILED;
- }
-
- void *mem = mmap(NULL, size, PROT_READ | PROT_WRITE, flags, fd, 0);
- if (mem != MAP_FAILED) {
-#ifdef NETDATA_LOG_ALLOCATIONS
- mmap_accounting(size);
-#endif
- int advise = MADV_SEQUENTIAL | MADV_DONTFORK;
- if (flags & MAP_SHARED) advise |= MADV_WILLNEED;
-
- if (madvise(mem, size, advise) != 0 && log_madvise) {
- error("Cannot advise the kernel about shared memory usage.");
- log_madvise--;
- }
- }
-
- if(fd != -1)
- close(fd);
-
- return mem;
-}
-
-#ifdef MADV_MERGEABLE
-static void *memory_file_mmap_ksm(const char *filename, size_t size, int flags) {
- // info("memory_file_mmap_ksm('%s', %zu", filename, size);
- static int log_madvise_2 = 1, log_madvise_3 = 1;
-
- int fd = -1;
- if(filename) {
- fd = memory_file_open(filename, size);
- if(fd == -1) return MAP_FAILED;
- }
-
- void *mem = mmap(NULL, size, PROT_READ | PROT_WRITE, flags | MAP_ANONYMOUS, -1, 0);
- if (mem != MAP_FAILED) {
-#ifdef NETDATA_LOG_ALLOCATIONS
- mmap_accounting(size);
-#endif
- if(fd != -1) {
- if (lseek(fd, 0, SEEK_SET) == 0) {
- if (read(fd, mem, size) != (ssize_t) size)
- error("Cannot read from file '%s'", filename);
- }
- else error("Cannot seek to beginning of file '%s'.", filename);
- }
-
- // don't use MADV_SEQUENTIAL|MADV_DONTFORK, they disable MADV_MERGEABLE
- if (madvise(mem, size, MADV_SEQUENTIAL | MADV_DONTFORK) != 0 && log_madvise_2) {
- error("Cannot advise the kernel about the memory usage (MADV_SEQUENTIAL|MADV_DONTFORK) of file '%s'.", filename);
- log_madvise_2--;
- }
-
- if (madvise(mem, size, MADV_MERGEABLE) != 0 && log_madvise_3) {
- error("Cannot advise the kernel about the memory usage (MADV_MERGEABLE) of file '%s'.", filename);
- log_madvise_3--;
- }
- }
-
- if(fd != -1)
- close(fd);
-
- return mem;
-}
-#else
-static void *memory_file_mmap_ksm(const char *filename, size_t size, int flags) {
- // info("memory_file_mmap_ksm FALLBACK ('%s', %zu", filename, size);
-
- if(filename)
- return memory_file_mmap(filename, size, flags);
-
- // when KSM is not available and no filename is given (memory mode = ram),
- // we just report failure
- return MAP_FAILED;
-}
-#endif
-
-void *mymmap(const char *filename, size_t size, int flags, int ksm) {
- void *mem = NULL;
-
- if (filename && (flags & MAP_SHARED || !enable_ksm || !ksm))
- // memory mode = map | save
- // when KSM is not enabled
- // MAP_SHARED is used for memory mode = map (no KSM possible)
- mem = memory_file_mmap(filename, size, flags);
-
- else
- // memory mode = save | ram
- // when KSM is enabled
- // for memory mode = ram, the filename is NULL
- mem = memory_file_mmap_ksm(filename, size, flags);
-
- if(mem == MAP_FAILED) return NULL;
-
- errno = 0;
- return mem;
-}
-
-int memory_file_save(const char *filename, void *mem, size_t size) {
- char tmpfilename[FILENAME_MAX + 1];
-
- snprintfz(tmpfilename, FILENAME_MAX, "%s.%ld.tmp", filename, (long) getpid());
-
- int fd = open(tmpfilename, O_RDWR | O_CREAT | O_NOATIME, 0664);
- if (fd < 0) {
- error("Cannot create/open file '%s'.", filename);
- return -1;
- }
-
- if (write(fd, mem, size) != (ssize_t) size) {
- error("Cannot write to file '%s' %ld bytes.", filename, (long) size);
- close(fd);
- return -1;
- }
-
- close(fd);
-
- if (rename(tmpfilename, filename)) {
- error("Cannot rename '%s' to '%s'", tmpfilename, filename);
- return -1;
- }
-
- return 0;
-}
-
-int fd_is_valid(int fd) {
- return fcntl(fd, F_GETFD) != -1 || errno != EBADF;
-}
-
-char *fgets_trim_len(char *buf, size_t buf_size, FILE *fp, size_t *len) {
- char *s = fgets(buf, (int)buf_size, fp);
- if (!s) return NULL;
-
- char *t = s;
- if (*t != '\0') {
- // find the string end
- while (*++t != '\0');
-
- // trim trailing spaces/newlines/tabs
- while (--t > s && *t == '\n')
- *t = '\0';
- }
-
- if (len)
- *len = t - s + 1;
-
- return s;
-}
-
-int vsnprintfz(char *dst, size_t n, const char *fmt, va_list args) {
- int size = vsnprintf(dst, n, fmt, args);
-
- if (unlikely((size_t) size > n)) {
- // truncated
- size = (int)n;
- }
-
- dst[size] = '\0';
- return size;
-}
-
-int snprintfz(char *dst, size_t n, const char *fmt, ...) {
- va_list args;
-
- va_start(args, fmt);
- int ret = vsnprintfz(dst, n, fmt, args);
- va_end(args);
-
- return ret;
-}
-
-// ----------------------------------------------------------------------------
-// system functions
-// to retrieve settings of the system
-
-int processors = 1;
-long get_system_cpus(void) {
- processors = 1;
-
- #ifdef __APPLE__
- int32_t tmp_processors;
-
- if (unlikely(GETSYSCTL_BY_NAME("hw.logicalcpu", tmp_processors))) {
- error("Assuming system has %d processors.", processors);
- } else {
- processors = tmp_processors;
- }
-
- return processors;
- #elif __FreeBSD__
- int32_t tmp_processors;
-
- if (unlikely(GETSYSCTL_BY_NAME("hw.ncpu", tmp_processors))) {
- error("Assuming system has %d processors.", processors);
- } else {
- processors = tmp_processors;
- }
-
- return processors;
- #else
-
- char filename[FILENAME_MAX + 1];
- snprintfz(filename, FILENAME_MAX, "%s/proc/stat", netdata_configured_host_prefix);
-
- procfile *ff = procfile_open(filename, NULL, PROCFILE_FLAG_DEFAULT);
- if(!ff) {
- error("Cannot open file '%s'. Assuming system has %d processors.", filename, processors);
- return processors;
- }
-
- ff = procfile_readall(ff);
- if(!ff) {
- error("Cannot open file '%s'. Assuming system has %d processors.", filename, processors);
- return processors;
- }
-
- 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) processors++;
- }
- processors--;
- if(processors < 1) processors = 1;
-
- procfile_close(ff);
-
- debug(D_SYSTEM, "System has %d processors.", processors);
- return processors;
-
- #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;
- 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);
-
- unsigned long long max = 0;
- if(read_single_number_file(filename, &max) != 0) {
- error("Cannot open file '%s'. Assuming system supports %d pids.", filename, pid_max);
- return pid_max;
- }
-
- if(!max) {
- 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 hz;
-void get_system_HZ(void) {
- long ticks;
-
- if ((ticks = sysconf(_SC_CLK_TCK)) == -1) {
- error("Cannot get system clock ticks");
- }
-
- hz = (unsigned int) ticks;
-}
-
-/*
-// poor man cycle counting
-static unsigned long tsc;
-void begin_tsc(void) {
- unsigned long a, d;
- asm volatile ("cpuid\nrdtsc" : "=a" (a), "=d" (d) : "0" (0) : "ebx", "ecx");
- tsc = ((unsigned long)d << 32) | (unsigned long)a;
-}
-unsigned long end_tsc(void) {
- unsigned long a, d;
- asm volatile ("rdtscp" : "=a" (a), "=d" (d) : : "ecx");
- return (((unsigned long)d << 32) | (unsigned long)a) - tsc;
-}
-*/
-
-int recursively_delete_dir(const char *path, const char *reason) {
- DIR *dir = opendir(path);
- if(!dir) {
- error("Cannot read %s directory to be deleted '%s'", reason?reason:"", path);
- return -1;
- }
-
- int ret = 0;
- struct dirent *de = NULL;
- while((de = readdir(dir))) {
- if(de->d_type == DT_DIR
- && (
- (de->d_name[0] == '.' && de->d_name[1] == '\0')
- || (de->d_name[0] == '.' && de->d_name[1] == '.' && de->d_name[2] == '\0')
- ))
- continue;
-
- char fullpath[FILENAME_MAX + 1];
- snprintfz(fullpath, FILENAME_MAX, "%s/%s", path, de->d_name);
-
- if(de->d_type == DT_DIR) {
- int r = recursively_delete_dir(fullpath, reason);
- if(r > 0) ret += r;
- continue;
- }
-
- info("Deleting %s file '%s'", reason?reason:"", fullpath);
- if(unlikely(unlink(fullpath) == -1))
- error("Cannot delete %s file '%s'", reason?reason:"", fullpath);
- else
- ret++;
- }
-
- info("Deleting empty directory '%s'", path);
- if(unlikely(rmdir(path) == -1))
- error("Cannot delete empty directory '%s'", path);
- else
- ret++;
-
- closedir(dir);
-
- return ret;
-}