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99 lines
3.5 KiB
99 lines
3.5 KiB
#include "node.h"
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#include "platform.h"
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#include <sys/param.h> // for MAXPATHLEN
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#include <unistd.h> // getpagesize
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namespace node {
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static char buf[MAXPATHLEN + 1];
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int OS::GetMemory(size_t *rss, size_t *vsize) {
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FILE *f = fopen("/proc/self/stat", "r");
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if (!f) return -1;
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int itmp;
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char ctmp;
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size_t page_size = getpagesize();
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/* PID */
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if (fscanf(f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Exec file */
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if (fscanf (f, "%s ", buf) == 0) goto error; /* coverity[secure_coding] */
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/* State */
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if (fscanf (f, "%c ", &ctmp) == 0) goto error; /* coverity[secure_coding] */
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/* Parent process */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Process group */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Session id */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* TTY */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* TTY owner process group */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Flags */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Minor faults (no memory page) */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Minor faults, children */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Major faults (memory page faults) */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Major faults, children */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* utime */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* stime */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* utime, children */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* stime, children */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* jiffies remaining in current time slice */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* 'nice' value */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* jiffies until next timeout */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* jiffies until next SIGALRM */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* start time (jiffies since system boot) */
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if (fscanf (f, "%d ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Virtual memory size */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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*vsize = (size_t) itmp;
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/* Resident set size */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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*rss = (size_t) itmp * page_size;
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/* rlim */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Start of text */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* End of text */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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/* Start of stack */
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if (fscanf (f, "%u ", &itmp) == 0) goto error; /* coverity[secure_coding] */
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fclose (f);
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return 0;
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error:
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fclose (f);
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return -1;
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}
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int OS::GetExecutablePath(char* buffer, size_t* size) {
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*size = readlink("/proc/self/exe", buffer, *size - 1);
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if (*size <= 0) return -1;
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buffer[*size] = '\0';
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return 0;
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}
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} // namespace node
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