summaryrefslogtreecommitdiff
path: root/src/thread/forkall.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/thread/forkall.c')
-rw-r--r--src/thread/forkall.c68
1 files changed, 0 insertions, 68 deletions
diff --git a/src/thread/forkall.c b/src/thread/forkall.c
deleted file mode 100644
index 6810ea50..00000000
--- a/src/thread/forkall.c
+++ /dev/null
@@ -1,68 +0,0 @@
-#if 0
-#include "pthread_impl.h"
-#include <setjmp.h>
-
-struct thread {
- struct thread *next;
- pthread_t td;
- jmp_buf jb;
- void *tmp, *stack;
-};
-
-struct ctx {
- struct thread *list;
- pthread_t caller;
- pid_t pid;
- size_t cnt;
- pthread_barrier_t barrier;
-};
-
-static void restart_thread(pthread_t self)
-{
- struct thread *t = self->start_arg;
- self->start_arg = t->tmp;
- self->pid = getpid();
- longjmp(t->jb, 1);
-}
-
-static void do_forkall(void *p)
-{
- struct ctx *c = p, *volatile cv = c;
- char tmpstack[2048];
- struct thread *tp, t = {
- .td = __pthread_self(),
- .next = c->list,
- .stack = tmpstack+1024
- };
-
- if (t.td != c->caller) {
- c->cnt++;
- t.tmp = t.td->start_arg;
- t.td->start_arg = &t;
- if (setjmp(t.jb)) {
- c = cv;
- if (c->pid) return;
- pthread_barrier_wait(&c->barrier);
- return;
- }
- c->list = &t;
- __synccall_wait();
- return;
- }
- c->pid = syscall(SYS_fork);
- if (c->pid) return;
-
- pthread_barrier_init(&c->barrier, 0, c->cnt);
- for (tp=c->list; tp; tp=tp->next)
- if (__uniclone(tp->stack, restart_thread, tp->td) < 0)
- _exit(127);
- pthread_barrier_wait(&c->barrier);
-}
-
-pid_t forkall()
-{
- struct ctx c = { .caller = pthread_self() };
- __synccall(do_forkall, &c);
- return c.pid;
-}
-#endif