misc/cgo/testsigfwd: delete unused code

This code was introduced in CL 17903 but has never executed. It's also
fundamentally non-deterministic. Delete it.

Simplification for #37486.

Change-Id: I049564123fb4fba401154e2ea0fc429e552d4749
Reviewed-on: https://go-review.googlesource.com/c/go/+/431258
Reviewed-by: Bryan Mills <bcmills@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Austin Clements <austin@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>

diff --git a/misc/cgo/testsigfwd/main.go b/misc/cgo/testsigfwd/main.go
index 6d970500781959a71ce04aa93c32dd7c346ac895..1d8633971d595851b5f3ed06b8c8098c96f14f68 100644 (file)
--- a/misc/cgo/testsigfwd/main.go
+++ b/misc/cgo/testsigfwd/main.go
@@ -7,14 +7,10 @@ package main
 import "fmt"
 
 /*
-#cgo CFLAGS: -pthread
-#cgo LDFLAGS: -pthread
-
 #include <signal.h>
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
-#include <pthread.h>
 
 int *p;
 static void sigsegv() {
@@ -30,60 +26,12 @@ static void segvhandler(int signum) {
        }
 }
 
-static volatile sig_atomic_t sigioSeen;
-
-// Use up some stack space.
-static void recur(int i, char *p) {
-       char a[1024];
-
-       *p = '\0';
-       if (i > 0) {
-               recur(i - 1, a);
-       }
-}
-
-static void iohandler(int signum) {
-       char a[1024];
-
-       recur(4, a);
-       sigioSeen = 1;
-}
-
-static void* sigioThread(void* arg __attribute__ ((unused))) {
-       raise(SIGIO);
-       return NULL;
-}
-
-static void sigioOnThread() {
-       pthread_t tid;
-       int i;
-
-       pthread_create(&tid, NULL, sigioThread, NULL);
-       pthread_join(tid, NULL);
-
-       // Wait until the signal has been delivered.
-       i = 0;
-       while (!sigioSeen) {
-               if (sched_yield() < 0) {
-                       perror("sched_yield");
-               }
-               i++;
-               if (i > 10000) {
-                       fprintf(stderr, "looping too long waiting for signal\n");
-                       exit(EXIT_FAILURE);
-               }
-       }
-}
-
 static void __attribute__ ((constructor)) sigsetup(void) {
        struct sigaction act;
 
        memset(&act, 0, sizeof act);
        act.sa_handler = segvhandler;
        sigaction(SIGSEGV, &act, NULL);
-
-       act.sa_handler = iohandler;
-       sigaction(SIGIO, &act, NULL);
 }
 */
 import "C"