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Allocate only the required processes

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This commit is contained in:
Rodrigo Arias 2021-11-18 15:53:10 +01:00
parent 3e35f3d88b
commit bed8c35980
3 changed files with 52 additions and 26 deletions
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2
emu.h
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@ -384,7 +384,7 @@ struct ovni_loom {
/* Virtual CPU */
struct ovni_cpu vcpu;
struct ovni_eproc proc[OVNI_MAX_PROC];
struct ovni_eproc *proc;
/* Keep a list of updated cpus */
int nupdated_cpus;

1
ovni.h
View File

@ -41,7 +41,6 @@ extern "C" {
typedef struct json_value_t JSON_Value;
#define OVNI_MAX_CPU 256
#define OVNI_MAX_PROC 256
#define OVNI_MAX_THR 256
#define OVNI_TRACEDIR "ovni"
#define OVNI_MAX_HOSTNAME 512

73
trace.c
View File

@ -38,6 +38,7 @@ find_dir_prefix_str(struct dirent *dirent, const char *prefix, const char **str)
p++;
if(str)
*str = p;
return 0;
@ -57,6 +58,23 @@ find_dir_prefix_int(struct dirent *dirent, const char *prefix, int *num)
return 0;
}
static int
count_dir_prefix(DIR *dir, const char *prefix)
{
struct dirent *dirent;
int n = 0;
while((dirent = readdir(dir)) != NULL)
{
if(find_dir_prefix_str(dirent, prefix, NULL) != 0)
continue;
n++;
}
return n;
}
static int
load_thread(struct ovni_ethread *thread, struct ovni_eproc *proc, int index, int tid, char *filepath)
{
@ -163,13 +181,12 @@ load_proc(struct ovni_eproc *proc, struct ovni_loom *loom, int index, int pid, c
}
static int
load_loom(struct ovni_loom *loom, int loomid, char *loomdir)
load_loom(struct ovni_loom *loom, char *loomdir)
{
int pid;
int pid, i;
char path[PATH_MAX];
DIR *dir;
struct dirent *dirent;
struct ovni_eproc *proc;
if((dir = opendir(loomdir)) == NULL)
{
@ -178,6 +195,26 @@ load_loom(struct ovni_loom *loom, int loomid, char *loomdir)
return -1;
}
loom->nprocs = count_dir_prefix(dir, "proc");
if(loom->nprocs <= 0)
{
err("cannot find any process directory in loom %s\n",
loom->hostname);
return -1;
}
loom->proc = calloc(loom->nprocs, sizeof(struct ovni_eproc));
if(loom->proc == NULL)
{
perror("calloc failed");
return -1;
}
rewinddir(dir);
i = 0;
while((dirent = readdir(dir)) != NULL)
{
if(find_dir_prefix_int(dirent, "proc", &pid) != 0)
@ -185,19 +222,11 @@ load_loom(struct ovni_loom *loom, int loomid, char *loomdir)
sprintf(path, "%s/%s", loomdir, dirent->d_name);
if(loom->nprocs >= OVNI_MAX_PROC)
{
err("too many process streams for loom %d\n",
loomid);
abort();
}
proc = &loom->proc[loom->nprocs];
if(load_proc(proc, loom, loom->nprocs, pid, path) != 0)
if(load_proc(&loom->proc[i], loom, i, pid, path) != 0)
return -1;
loom->nprocs++;
i++;
}
closedir(dir);
@ -241,8 +270,6 @@ ovni_load_trace(struct ovni_trace *trace, char *tracedir)
trace->nlooms++;
}
closedir(dir);
if(trace->nlooms == 0)
{
err("cannot find any loom in %s\n", tracedir);
@ -270,12 +297,7 @@ ovni_load_trace(struct ovni_trace *trace, char *tracedir)
return -1;
}
/* Read again the directory */
if((dir = opendir(tracedir)) == NULL)
{
err("opendir %s failed: %s\n", tracedir, strerror(errno));
return -1;
}
rewinddir(dir);
l = 0;
@ -326,7 +348,7 @@ ovni_load_trace(struct ovni_trace *trace, char *tracedir)
/* Safe */
strcpy(trace->loom[l].hostname, hosts[l]);
if(load_loom(&trace->loom[l], l, looms[l]) != 0)
if(load_loom(&trace->loom[l], looms[l]) != 0)
return -1;
}
@ -448,6 +470,11 @@ ovni_free_streams(struct ovni_trace *trace)
void
ovni_free_trace(struct ovni_trace *trace)
{
size_t i;
for(i=0; i<trace->nlooms; i++)
free(trace->loom[i].proc);
free(trace->loom);
}