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-rw-r--r--src/thread/cancel_impl.c26
-rw-r--r--src/thread/i386/syscall_cp.s2
-rw-r--r--src/thread/x86_64/syscall_cp.s2
3 files changed, 19 insertions, 11 deletions
diff --git a/src/thread/cancel_impl.c b/src/thread/cancel_impl.c
index 5ce545d7..28dc84dc 100644
--- a/src/thread/cancel_impl.c
+++ b/src/thread/cancel_impl.c
@@ -1,5 +1,13 @@
#include "pthread_impl.h"
+void __cancel()
+{
+ pthread_t self = __pthread_self();
+ self->canceldisable = 1;
+ self->cancelasync = 0;
+ pthread_exit(PTHREAD_CANCELED);
+}
+
long __syscall_cp_asm(volatile void *, long, long, long, long, long, long, long);
long (__syscall_cp)(long nr, long u, long v, long w, long x, long y, long z)
@@ -18,7 +26,7 @@ long (__syscall_cp)(long nr, long u, long v, long w, long x, long y, long z)
r = __syscall_cp_asm(&self->cp_sp, nr, u, v, w, x, y, z);
self->cp_sp = old_sp;
self->cp_ip = old_ip;
- if (r == -EINTR && self->cancel) pthread_exit(PTHREAD_CANCELED);
+ if (r == -EINTR && self->cancel) __cancel();
return r;
}
@@ -31,23 +39,23 @@ static void cancel_handler(int sig, siginfo_t *si, void *ctx)
if (!self->cancel || self->canceldisable) return;
- if (self->cancelasync) pthread_exit(PTHREAD_CANCELED);
+ sigaddset(&uc->uc_sigmask, SIGCANCEL);
- if (sp != self->cp_sp) {
- if (!sp) return;
- sigaddset(&uc->uc_sigmask, SIGCANCEL);
- __syscall(SYS_tgkill, self->pid, self->tid, SIGCANCEL);
- return;
+ if (self->cancelasync || sp == self->cp_sp && ip <= self->cp_ip) {
+ self->canceldisable = 1;
+ pthread_sigmask(SIG_SETMASK, &uc->uc_sigmask, 0);
+ __cancel();
}
- if (ip <= self->cp_ip) pthread_exit(PTHREAD_CANCELED);
+ if (self->cp_sp)
+ __syscall(SYS_tgkill, self->pid, self->tid, SIGCANCEL);
}
static void testcancel()
{
pthread_t self = __pthread_self();
if (self->cancel && !self->canceldisable)
- pthread_exit(PTHREAD_CANCELED);
+ __cancel();
}
static void init_cancellation()
diff --git a/src/thread/i386/syscall_cp.s b/src/thread/i386/syscall_cp.s
index 6f98a779..6d8c354b 100644
--- a/src/thread/i386/syscall_cp.s
+++ b/src/thread/i386/syscall_cp.s
@@ -33,4 +33,4 @@ __syscall_cp_asm:
movl %eax,4(%ecx)
movl %eax,(%ecx)
pushl $-1
- call pthread_exit
+ call __cancel
diff --git a/src/thread/x86_64/syscall_cp.s b/src/thread/x86_64/syscall_cp.s
index 1894ce19..a36e8d1d 100644
--- a/src/thread/x86_64/syscall_cp.s
+++ b/src/thread/x86_64/syscall_cp.s
@@ -21,4 +21,4 @@ __syscall_cp_asm:
mov %rdi,8(%r10)
mov %rdi,(%r10)
dec %rdi
- jmp pthread_exit
+ jmp __cancel