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#include <pthread.h>
#include "ierrors.h"
#include "iapi.h"
#include <gp.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define NUM_THREADS 10
static int my_argc;
static char **my_argv;
static int my_argv_file;
typedef struct my_stdio_s
{
FILE *stdout;
FILE *stderr;
} my_stdio;
/* stdio functions */
static int GSDLLCALL
my_stdin(void *instance, char *buf, int len)
{
return 0; /* We don't support stdin */
}
static int GSDLLCALL
my_stdout(void *instance, const char *str, int len)
{
my_stdio *stdio = (my_stdio *)instance;
fwrite(str, 1, len, stdio->stdout);
fflush(stdio->stdout);
return len;
}
static int GSDLLCALL
my_stderr(void *instance, const char *str, int len)
{
my_stdio *stdio = (my_stdio *)instance;
fwrite(str, 1, len, stdio->stderr);
fflush(stdio->stderr);
return len;
}
static void *gs_main(void *arg)
{
int threadnum = (int)(void *)arg;
int code, code1;
char text[256];
void *minst = NULL;
char **gsargv;
int gsargc;
int i, pos, len;
my_stdio stdio;
snprintf(text, sizeof(text), "stdout.%d", threadnum);
stdio.stdout = gp_fopen(text, "w");
snprintf(text, sizeof(text), "stderr.%d", threadnum);
stdio.stderr = gp_fopen(text, "w");
gsargv = malloc(sizeof(*gsargv)*my_argc);
if (!gsargv)
{
fprintf(stdio.stderr, "Failed to allocate arg space in thread %d\n", threadnum);
return (void *)-1;
}
for (i=0; i < my_argc; i++)
gsargv[i] = my_argv[i];
gsargv[my_argv_file] = text;
gsargc = my_argc;
strncpy(text, my_argv[my_argv_file], sizeof(text));
text[sizeof(text)-1]=0;
pos = strlen(text);
len = sizeof(text)+1-pos;
snprintf(text+pos, len, "%d", threadnum);
code = gsapi_new_instance(&minst, &stdio);
if (code < 0)
{
fprintf(stdio.stderr, "gsapi_new_instance failure in thread %d\n", threadnum);
free(gsargv);
return (void *)-1;
}
gsapi_set_stdio(minst, my_stdin, my_stdout, my_stderr);
code = gsapi_init_with_args(minst, gsargc, gsargv);
code1 = gsapi_exit(minst);
if ((code == 0) || (code == gs_error_Quit))
code = code1;
gsapi_delete_instance(minst);
free(gsargv);
if ((code == 0) || (code == gs_error_Quit))
return (void *)0;
return (void *)1;
}
int main(int argc, char *argv[])
{
int i;
pthread_t thread[NUM_THREADS];
my_argc = argc;
my_argv = argv;
for (i=0; i < argc; i++)
if (!strcmp(argv[i], "-o"))
break;
if (i >= argc-1)
{
fprintf(stderr, "Expected a -o argument to rewrite!\n");
exit(EXIT_FAILURE);
}
my_argv_file = i+1;
for (i=0; i < NUM_THREADS; i++)
{
if (pthread_create(&thread[i], NULL, gs_main, (void *)i) != 0)
{
fprintf(stderr, "Thread %d creation failed\n", i);
exit(EXIT_FAILURE);
}
}
for (i=0; i < NUM_THREADS; i++)
{
if (pthread_join(thread[i], NULL) != 0)
{
fprintf(stderr, "Thread %d join failed\n", i);
exit(EXIT_FAILURE);
}
}
return EXIT_SUCCESS;
}
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