basic clone() support

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@40 c046a42c-6fe2-441c-8c8c-71466251a162

tests/Makefile

@@ -4,7 +4,7 @@ CFLAGS=-Wall -O2 -g
 LDFLAGS=
 
 ifeq ($(ARCH),i386)
-TESTS=test2 sha1-i386 test-i386
+TESTS=testclone testsig testthread sha1-i386 test-i386
 endif
 TESTS+=sha1
 
@@ -16,9 +16,15 @@ hello: hello.c
 	$(CC) -nostdlib $(CFLAGS) -static $(LDFLAGS) -o $@ $<
 	strip hello
 
-test2: test2.c
+testclone: testclone.c
 	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $<
 
+testsig: testsig.c
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $<
+
+testthread: testthread.c
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $< -lpthread
+
 # i386 emulation test (test various opcodes) */
 test-i386: test-i386.c test-i386-code16.S \
            test-i386.h test-i386-shift.h test-i386-muldiv.h

tests/testclone.c

@@ -0,0 +1,61 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <signal.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <pthread.h>
+#include <sys/wait.h>
+#include <sched.h>
+
+int thread1_func(void *arg)
+{
+    int i;
+    char buf[512];
+
+    for(i=0;i<10;i++) {
+        snprintf(buf, sizeof(buf), "thread1: %d %s\n", i, (char *)arg);
+        write(1, buf, strlen(buf));
+        usleep(100 * 1000);
+    }
+    return 0;
+}
+
+int thread2_func(void *arg)
+{
+    int i;
+    char buf[512];
+    for(i=0;i<20;i++) {
+        snprintf(buf, sizeof(buf), "thread2: %d %s\n", i, (char *)arg);
+        write(1, buf, strlen(buf));
+        usleep(120 * 1000);
+    }
+    return 0;
+}
+
+#define STACK_SIZE 16384
+
+void test_clone(void)
+{
+    uint8_t *stack1, *stack2;
+    int pid1, pid2, status1, status2;
+
+    stack1 = malloc(STACK_SIZE);
+    pid1 = clone(thread1_func, stack1 + STACK_SIZE, 
+                 CLONE_VM | CLONE_FS | CLONE_FILES | SIGCHLD, "hello1");
+
+    stack2 = malloc(STACK_SIZE);
+    pid2 = clone(thread2_func, stack2 + STACK_SIZE, 
+                 CLONE_VM | CLONE_FS | CLONE_FILES | SIGCHLD, "hello2");
+
+    while (waitpid(pid1, &status1, 0) != pid1);
+    while (waitpid(pid2, &status2, 0) != pid2);
+    printf("status1=0x%x\n", status1);
+    printf("status2=0x%x\n", status2);
+    printf("End of clone test.\n");
+}
+
+int main(int argc, char **argv)
+{
+    test_clone();
+    return 0;
+}

tests/testsig.c

@@ -0,0 +1,24 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <signal.h>
+#include <unistd.h>
+
+void alarm_handler(int sig)
+{
+    printf("alarm signal=%d\n", sig);
+    alarm(1);
+}
+
+int main(int argc, char **argv)
+{
+    struct sigaction act;
+    act.sa_handler = alarm_handler;
+    sigemptyset(&act.sa_mask);
+    act.sa_flags = 0;
+    sigaction(SIGALRM, &act, NULL);
+    alarm(1);
+    for(;;) {
+        sleep(1);
+    }
+    return 0;
+}

tests/testthread.c

@@ -0,0 +1,50 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <signal.h>
+#include <unistd.h>
+#include <inttypes.h>
+#include <pthread.h>
+#include <sys/wait.h>
+#include <sched.h>
+
+void *thread1_func(void *arg)
+{
+    int i;
+    char buf[512];
+
+    for(i=0;i<10;i++) {
+        snprintf(buf, sizeof(buf), "thread1: %d %s\n", i, (char *)arg);
+        write(1, buf, strlen(buf));
+        usleep(100 * 1000);
+    }
+    return NULL;
+}
+
+void *thread2_func(void *arg)
+{
+    int i;
+    char buf[512];
+    for(i=0;i<20;i++) {
+        snprintf(buf, sizeof(buf), "thread2: %d %s\n", i, (char *)arg);
+        write(1, buf, strlen(buf));
+        usleep(150 * 1000);
+    }
+    return NULL;
+}
+
+void test_pthread(void)
+{
+    pthread_t tid1, tid2;
+
+    pthread_create(&tid1, NULL, thread1_func, "hello1");
+    pthread_create(&tid2, NULL, thread2_func, "hello2");
+    pthread_join(tid1, NULL);
+    pthread_join(tid2, NULL);
+    printf("End of pthread test.\n");
+}
+
+int main(int argc, char **argv)
+{
+    test_pthread();
+    return 0;
+}