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-rw-r--r--src/ipc.c261
1 files changed, 0 insertions, 261 deletions
diff --git a/src/ipc.c b/src/ipc.c
deleted file mode 100644
index a9076fca4..000000000
--- a/src/ipc.c
+++ /dev/null
@@ -1,261 +0,0 @@
-#include "common.h"
-
-#include <sys/sem.h>
-#include <sys/msg.h>
-#include <sys/shm.h>
-
-
-#ifndef SEMVMX
-#define SEMVMX 32767 /* <= 32767 semaphore maximum value */
-#endif
-
-/* Some versions of libc only define IPC_INFO when __USE_GNU is defined. */
-#ifndef IPC_INFO
-#define IPC_INFO 3
-#endif
-
-struct ipc_limits {
- uint64_t shmmni; /* max number of segments */
- uint64_t shmmax; /* max segment size */
- uint64_t shmall; /* max total shared memory */
- uint64_t shmmin; /* min segment size */
-
- int semmni; /* max number of arrays */
- int semmsl; /* max semaphores per array */
- int semmns; /* max semaphores system wide */
- int semopm; /* max ops per semop call */
- unsigned int semvmx; /* semaphore max value (constant) */
-
- int msgmni; /* max queues system wide */
- size_t msgmax; /* max size of message */
- int msgmnb; /* default max size of queue */
-};
-
-struct ipc_status {
- int semusz; /* current number of arrays */
- int semaem; /* current semaphores system wide */
-};
-
-/*
- * The last arg of semctl is a union semun, but where is it defined? X/OPEN
- * tells us to define it ourselves, but until recently Linux include files
- * would also define it.
- */
-#ifndef HAVE_UNION_SEMUN
-/* according to X/OPEN we have to define it ourselves */
-union semun {
- int val;
- struct semid_ds *buf;
- unsigned short int *array;
- struct seminfo *__buf;
-};
-#endif
-
-static inline int ipc_sem_get_limits(struct ipc_limits *lim) {
- static procfile *ff = NULL;
- static int error_shown = 0;
- static char filename[FILENAME_MAX + 1] = "";
-
- if(unlikely(!filename[0]))
- snprintfz(filename, FILENAME_MAX, "%s/proc/sys/kernel/sem", netdata_configured_host_prefix);
-
- if(unlikely(!ff)) {
- ff = procfile_open(filename, NULL, PROCFILE_FLAG_DEFAULT);
- if(unlikely(!ff)) {
- if(unlikely(!error_shown)) {
- error("IPC: Cannot open file '%s'.", filename);
- error_shown = 1;
- }
- goto ipc;
- }
- }
-
- ff = procfile_readall(ff);
- if(unlikely(!ff)) {
- if(unlikely(!error_shown)) {
- error("IPC: Cannot read file '%s'.", filename);
- error_shown = 1;
- }
- goto ipc;
- }
-
- if(procfile_lines(ff) >= 1 && procfile_linewords(ff, 0) >= 4) {
- lim->semvmx = SEMVMX;
- lim->semmsl = str2i(procfile_lineword(ff, 0, 0));
- lim->semmns = str2i(procfile_lineword(ff, 0, 1));
- lim->semopm = str2i(procfile_lineword(ff, 0, 2));
- lim->semmni = str2i(procfile_lineword(ff, 0, 3));
- return 0;
- }
- else {
- if(unlikely(!error_shown)) {
- error("IPC: Invalid content in file '%s'.", filename);
- error_shown = 1;
- }
- goto ipc;
- }
-
-ipc:
- // cannot do it from the file
- // query IPC
- {
- struct seminfo seminfo = {.semmni = 0};
- union semun arg = {.array = (ushort *) &seminfo};
-
- if(unlikely(semctl(0, 0, IPC_INFO, arg) < 0)) {
- error("IPC: Failed to read '%s' and request IPC_INFO with semctl().", filename);
- goto error;
- }
-
- lim->semvmx = SEMVMX;
- lim->semmni = seminfo.semmni;
- lim->semmsl = seminfo.semmsl;
- lim->semmns = seminfo.semmns;
- lim->semopm = seminfo.semopm;
- return 0;
- }
-
-error:
- lim->semvmx = 0;
- lim->semmni = 0;
- lim->semmsl = 0;
- lim->semmns = 0;
- lim->semopm = 0;
- return -1;
-}
-
-/*
-printf ("------ Semaphore Limits --------\n");
-printf ("max number of arrays = %d\n", limits.semmni);
-printf ("max semaphores per array = %d\n", limits.semmsl);
-printf ("max semaphores system wide = %d\n", limits.semmns);
-printf ("max ops per semop call = %d\n", limits.semopm);
-printf ("semaphore max value = %u\n", limits.semvmx);
-
-printf ("------ Semaphore Status --------\n");
-printf ("used arrays = %d\n", status.semusz);
-printf ("allocated semaphores = %d\n", status.semaem);
-*/
-
-static inline int ipc_sem_get_status(struct ipc_status *st) {
- struct seminfo seminfo;
- union semun arg;
-
- arg.array = (ushort *) (void *) &seminfo;
-
- if(unlikely(semctl (0, 0, SEM_INFO, arg) < 0)) {
- /* kernel not configured for semaphores */
- static int error_shown = 0;
- if(unlikely(!error_shown)) {
- error("IPC: kernel is not configured for semaphores");
- error_shown = 1;
- }
- st->semusz = 0;
- st->semaem = 0;
- return -1;
- }
-
- st->semusz = seminfo.semusz;
- st->semaem = seminfo.semaem;
- return 0;
-}
-
-int do_ipc(int update_every, usec_t dt) {
- (void)dt;
-
- static int initialized = 0, read_limits_next = -1;
- static struct ipc_limits limits;
- static struct ipc_status status;
- static RRDSETVAR *arrays_max = NULL, *semaphores_max = NULL;
- static RRDSET *st_semaphores = NULL, *st_arrays = NULL;
- static RRDDIM *rd_semaphores = NULL, *rd_arrays = NULL;
-
- if(unlikely(!initialized)) {
- initialized = 1;
-
- // make sure it works
- if(ipc_sem_get_limits(&limits) == -1) {
- error("unable to fetch semaphore limits");
- return 1;
- }
-
- // make sure it works
- if(ipc_sem_get_status(&status) == -1) {
- error("unable to fetch semaphore statistics");
- return 1;
- }
-
- // create the charts
- if(unlikely(!st_semaphores)) {
- st_semaphores = rrdset_create_localhost(
- "system"
- , "ipc_semaphores"
- , NULL
- , "ipc semaphores"
- , NULL
- , "IPC Semaphores"
- , "semaphores"
- , "linux"
- , "ipc"
- , 1000
- , localhost->rrd_update_every
- , RRDSET_TYPE_AREA
- );
- rd_semaphores = rrddim_add(st_semaphores, "semaphores", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
- }
-
- if(unlikely(!st_arrays)) {
- st_arrays = rrdset_create_localhost(
- "system"
- , "ipc_semaphore_arrays"
- , NULL
- , "ipc semaphores"
- , NULL
- , "IPC Semaphore Arrays"
- , "arrays"
- , "linux"
- , "ipc"
- , 1000
- , localhost->rrd_update_every
- , RRDSET_TYPE_AREA
- );
- rd_arrays = rrddim_add(st_arrays, "arrays", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
- }
-
- // variables
- semaphores_max = rrdsetvar_custom_chart_variable_create(st_semaphores, "ipc.semaphores.max");
- arrays_max = rrdsetvar_custom_chart_variable_create(st_arrays, "ipc.semaphores.arrays.max");
- }
-
- if(unlikely(read_limits_next < 0)) {
- if(unlikely(ipc_sem_get_limits(&limits) == -1)) {
- error("Unable to fetch semaphore limits.");
- }
- else {
- if(semaphores_max) rrdsetvar_custom_chart_variable_set(semaphores_max, limits.semmns);
- if(arrays_max) rrdsetvar_custom_chart_variable_set(arrays_max, limits.semmni);
-
- st_arrays->red = limits.semmni;
- st_semaphores->red = limits.semmns;
-
- read_limits_next = 60 / update_every;
- }
- }
- else
- read_limits_next--;
-
- if(unlikely(ipc_sem_get_status(&status) == -1)) {
- error("Unable to get semaphore statistics");
- return 0;
- }
-
- if(st_semaphores->counter_done) rrdset_next(st_semaphores);
- rrddim_set_by_pointer(st_semaphores, rd_semaphores, status.semaem);
- rrdset_done(st_semaphores);
-
- if(st_arrays->counter_done) rrdset_next(st_arrays);
- rrddim_set_by_pointer(st_arrays, rd_arrays, status.semusz);
- rrdset_done(st_arrays);
-
- return 0;
-}
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