diff options
Diffstat (limited to 'src/channel.c')
| -rw-r--r-- | src/channel.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/channel.c b/src/channel.c index 34a1fc3e0..d728c77d9 100644 --- a/src/channel.c +++ b/src/channel.c @@ -91,9 +91,10 @@ fd_write(sock_T fd, char *buf, size_t len) size = MAX_NAMED_PIPE_SIZE; else size = (DWORD)todo; - // If the pipe overflows while the job does not read the data, WriteFile - // will block forever. This abandons the write. + // If the pipe overflows while the job does not read the data, + // WriteFile() will block forever. This abandons the write. memset(&ov, 0, sizeof(ov)); + nwrite = 0; if (!WriteFile(h, buf + done, size, &nwrite, &ov)) { DWORD err = GetLastError(); @@ -104,6 +105,10 @@ fd_write(sock_T fd, char *buf, size_t len) return -1; FlushFileBuffers(h); } + else if (nwrite == 0) + // WriteFile() returns TRUE but did not write anything. This causes + // a hang, so bail out. + break; todo -= nwrite; done += nwrite; } |