Here is a fix that I suggest for 0.9.31.
It is in folder linuxthreads.old, but I don't know if it also applies to the
"new" version.
--- a/libpthread/linuxthreads.old/errno.c 2010-04-02 11:34:27.000000000
-0400
+++ b/libpthread/linuxthreads.old/errno.c 2010-05-11 09:44:16.589502638
-0400
@@ -22,6 +22,7 @@
#include "internals.h"
#include <stdio.h>
+libpthread_hidden_proto(__errno_location)
int *
__errno_location (void)
{
@@ -29,6 +30,7 @@
return THREAD_GETMEM (self, p_errnop);
}
+libpthread_hidden_proto(__h_errno_location)
int *
__h_errno_location (void)
{
The problem is shown when running the program in attachment.
A thread cannot read the right value of errno, but the main can.
The output of the program is:
thread: Failed to connect (-1 errno=0): Operation now in progress
main: Failed to connect (-1 errno=115): Operation now in progress
Regards,
Jean-Denis Boyer, Eng.
Media5 Corporation - Mediatrix, M5T, Media5Boss
4229 Garlock Street, Sherbrooke (Québec), J1L 2C8, CANADA
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <pthread.h>
#include <errno.h>
void MakeConnection(char *pszComment)
{
int s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (s == -1)
{
perror("socket");
}
else
{
int flags = fcntl(s, F_GETFL);
if (fcntl(s, F_SETFL, flags | O_NONBLOCK) == -1)
{
perror("fcntl");
}
else
{
struct sockaddr_in addr = { AF_INET, htons(389), {
htonl(0x0A150001) } };
int res = connect(s, (struct sockaddr *)&addr, sizeof(addr));
if (res = -1)
{
char buf[256];
sprintf(buf, "%s: Failed to connect (%d errno=%d)", pszComment,
res, errno);
perror(buf);
}
else
{
printf("Success!\n");
}
}
close(s);
}
}
void * ThreadEntry(void *arg)
{
MakeConnection("thread");
return 0;
}
int main()
{
pthread_t tt;
pthread_create(&tt, NULL, ThreadEntry, NULL);
pthread_join(tt, NULL);
MakeConnection("main");
}
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