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Assert we are running
Assert when we are running {{} {
On process {
set cc [c create]
$cc include <sys/mman.h>
$cc include <sys/stat.h>
$cc include <fcntl.h>
$cc include <unistd.h>
$cc include <stdlib.h>
$cc proc shmMount {char* name size_t size void* addr} void {
int fd = shm_open(name, O_RDWR | O_CREAT, S_IROTH | S_IWOTH | S_IRUSR | S_IWUSR);
ftruncate(fd, size);
void* ptr = mmap(addr, size, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_FIXED, fd, 0);
if (ptr == NULL || ptr != addr) {
fprintf(stderr, "shmMount: failed"); exit(1);
}
}
$cc proc blup {} void {
void* ptr = (void*)0x280000000;
shmMount("/folk-images", 1000000000, ptr);
char* s = (char*)ptr;
snprintf(s, 100, "Hello!");
}
$cc compile
blup
}
On process {
set cc [c create]
$cc include <sys/mman.h>
$cc include <sys/stat.h>
$cc include <fcntl.h>
$cc include <unistd.h>
$cc include <stdlib.h>
$cc proc shmMount {char* name size_t size void* addr} void {
int fd = shm_open(name, O_RDWR | O_CREAT, S_IROTH | S_IWOTH | S_IRUSR | S_IWUSR);
ftruncate(fd, size);
void* ptr = mmap(addr, size, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_FIXED, fd, 0);
if (ptr == NULL || ptr != addr) {
fprintf(stderr, "shmMount: failed"); exit(1);
}
}
$cc proc blup {} void {
void* ptr = (void*)0x280000000;
shmMount("/folk-images", 1000000000, ptr);
char* s = (char*)ptr;
printf("[%s]\n", s);
}
$cc compile
blup
}
}}
Step
after 1000 {set done true}
vwait done
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