rarias/ovni
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Use a string to identify the loom

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Allows the use of the hostname by now
This commit is contained in:
Rodrigo Arias 2021-08-02 20:03:20 +02:00
parent c6724f1e25
commit b6af567b23
2 changed files with 16 additions and 21 deletions
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32
ovni.c
View File

@ -41,31 +41,26 @@ struct ovni_rproc rproc = {0};
_Thread_local struct ovni_rthread rthread = {0};
static int
create_trace_dirs(char *tracedir, int loom, int proc)
create_trace_dirs(char *tracedir, char *loom, int proc)
{
char path[PATH_MAX];
fprintf(stderr, "create trace dirs for loom=%d, proc=%d\n",
fprintf(stderr, "create trace dirs for loom=%s, proc=%d\n",
loom, proc);
snprintf(path, PATH_MAX, "%s", tracedir);
if(mkdir(path, 0755))
{
fprintf(stderr, "mkdir %s: %s\n", path, strerror(errno));
//return -1;
}
/* May fail if another loom created the directory already */
mkdir(path, 0755);
snprintf(path, PATH_MAX, "%s/loom.%d", tracedir, loom);
snprintf(path, PATH_MAX, "%s/loom.%s", tracedir, loom);
if(mkdir(path, 0755))
{
fprintf(stderr, "mkdir %s: %s\n", path, strerror(errno));
//return -1;
}
/* Also may fail */
mkdir(path, 0755);
snprintf(rproc.dir, PATH_MAX, "%s/loom.%d/proc.%d", tracedir, loom, proc);
snprintf(rproc.dir, PATH_MAX, "%s/loom.%s/proc.%d", tracedir, loom, proc);
/* But this one shall not fail */
if(mkdir(rproc.dir, 0755))
{
fprintf(stderr, "mkdir %s: %s\n", rproc.dir, strerror(errno));
@ -92,16 +87,14 @@ create_trace_stream()
if(rthread.streamfd == -1)
{
fprintf(stderr, "open %s failed: %s\n", path, strerror(errno));
/* Shall we just return -1 ? */
abort();
//return -1;
return -1;
}
return 0;
}
int
ovni_proc_init(int loom, int proc)
ovni_proc_init(char *loom, int proc)
{
int i;
@ -109,7 +102,8 @@ ovni_proc_init(int loom, int proc)
memset(&rproc, 0, sizeof(rproc));
rproc.loom = loom;
/* FIXME: strcpy is insecure */
strcpy(rproc.loom, loom);
rproc.proc = proc;
/* By default we use the monotonic clock */

5
ovni.h
View File

@ -6,6 +6,7 @@
#include <stdlib.h>
#include <string.h>
#include <linux/limits.h>
#include <limits.h>
#define OVNI_MAX_CPU 256
#define OVNI_MAX_PROC 32
@ -93,7 +94,7 @@ struct ovni_rproc {
char dir[PATH_MAX];
int proc;
int loom;
char loom[HOST_NAME_MAX];
int ncpus;
clockid_t clockid;
char procdir[PATH_MAX];
@ -101,7 +102,7 @@ struct ovni_rproc {
int ready;
};
int ovni_proc_init(int loom, int proc);
int ovni_proc_init(char *loom, int proc);
int ovni_thread_init(pid_t tid);