Merging upstream version 1.11.0+dfsg.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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;
-}