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| author | Patrik Nyblom <[email protected]> | 2012-11-29 19:40:21 +0100 |
|---|---|---|
| committer | Patrik Nyblom <[email protected]> | 2012-12-20 12:16:37 +0100 |
| commit | 70ac0aadbdfe78cd25e35852d555467ccfcc650e (patch) | |
| tree | 375f9f2cfb61711ebbdcefca0570a116218e093c /erts | |
| parent | b9096c76013c3c6e665640142227d30c9ff96a78 (diff) | |
| download | otp-70ac0aadbdfe78cd25e35852d555467ccfcc650e.tar.gz otp-70ac0aadbdfe78cd25e35852d555467ccfcc650e.tar.bz2 otp-70ac0aadbdfe78cd25e35852d555467ccfcc650e.zip | |
Add workaround for CentOS/RedHat writev bug to inet_drv
Diffstat (limited to 'erts')
| -rw-r--r-- | erts/emulator/drivers/common/inet_drv.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/erts/emulator/drivers/common/inet_drv.c b/erts/emulator/drivers/common/inet_drv.c index 236b8710fb..09577ffa8a 100644 --- a/erts/emulator/drivers/common/inet_drv.c +++ b/erts/emulator/drivers/common/inet_drv.c @@ -9711,7 +9711,7 @@ static int tcp_inet_output(tcp_descriptor* desc, HANDLE event) else if (IS_CONNECTED(INETP(desc))) { for (;;) { int vsize; - ssize_t n; + ssize_t n,res; SysIOVec* iov; if ((iov = driver_peekq(ix, &vsize)) == NULL) { @@ -9722,7 +9722,8 @@ static int tcp_inet_output(tcp_descriptor* desc, HANDLE event) vsize = vsize > MAX_VSIZE ? MAX_VSIZE : vsize; DEBUGF(("tcp_inet_output(%ld): s=%d, About to send %d items\r\n", (long)desc->inet.port, desc->inet.s, vsize)); - if (IS_SOCKET_ERROR(sock_sendv(desc->inet.s, iov, vsize, &n, 0))) { + if (IS_SOCKET_ERROR(res = sock_sendv(desc->inet.s, iov, vsize, &n, 0))) { + write_error: if ((sock_errno() != ERRNO_BLOCK) && (sock_errno() != EINTR)) { DEBUGF(("tcp_inet_output(%ld): sock_sendv(%d) errno = %d\r\n", (long)desc->inet.port, vsize, sock_errno())); @@ -9733,6 +9734,20 @@ static int tcp_inet_output(tcp_descriptor* desc, HANDLE event) desc->inet.send_would_block = 1; #endif goto done; + } else if (res == 0) { /* Workaround for redhat/CentOS bug */ + size_t howmuch = 0x7FFFFFFF; /* max signed 32bit */ + int x; + for(x = 0; x < vsize && iov[x].iov_len == 0; ++x) + ; + if (x < vsize) { + if (howmuch > iov[x].iov_len) { + howmuch = iov[x].iov_len; + } + n = sock_send(desc->inet.s, iov[x].iov_base,howmuch,0); + if (IS_SOCKET_ERROR(n)) { + goto write_error; + } + } } if (driver_deq(ix, n) <= desc->low) { if (IS_BUSY(INETP(desc))) { |