mirror of
https://github.com/mirror/make.git
synced 2024-12-27 13:20:34 +08:00
Improve sync handling for -Ojob/-Otarget and recursion.
If we are not going to sync a command line then dump any collected output first to preserve ordering. Do some code cleanup: * Move the handle init to a separate function. * Move the temp file truncation to the output function. * Remember whether we sync in a variable for readability. * Handle EINTR and short writes in child_out(). * Always call sync_output() in case output_sync was changed due to error.
This commit is contained in:
Paul Smith
parent
cb2be0db36
commit
b8467292c9
13
ChangeLog
13
ChangeLog
@ -1,3 +1,16 @@
|
||||
2013-05-04 Paul Smith <psmith@gnu.org>
|
||||
|
||||
* job.c (child_out): Handle EINTR and incomplete write scenarios.
|
||||
(sync_init): New function: separate the initialization code.
|
||||
(assign_child_tempfiles): Remove truncation from this function,
|
||||
(sync_output): and add it here after output is generated.
|
||||
(reap_children): Always call sync_output() in case output_sync was
|
||||
reset after the child started, due to error.
|
||||
(start_job_command): Create new sync_cmd variable. Use new method
|
||||
for initializing the handle.
|
||||
If we're not syncing the output be sure any output we've saved is
|
||||
dumped immediately before starting the child.
|
||||
|
||||
2013-05-04 Eli Zaretskii <eliz@gnu.org>
|
||||
|
||||
* job.c (start_job_command): Make the condition for creating a
|
||||
|
||||
245
job.c
245
job.c
@ -244,9 +244,12 @@ unsigned long job_counter = 0;
|
||||
unsigned int jobserver_tokens = 0;
|
||||
|
||||
#ifdef OUTPUT_SYNC
|
||||
/* Semaphore for use in -j mode with output_sync. */
|
||||
|
||||
sync_handle_t sync_handle = -1;
|
||||
/* Semaphore for use in -j mode with output_sync. */
|
||||
static sync_handle_t sync_handle = -1;
|
||||
|
||||
/* Is make's stdout going to the same place as stderr? */
|
||||
static int combined_output = 0;
|
||||
|
||||
#define STREAM_OK(_s) ((fcntl (fileno (_s), F_GETFD) != -1) || (errno != EBADF))
|
||||
|
||||
@ -467,7 +470,7 @@ is_bourne_compatible_shell (const char *path)
|
||||
}
|
||||
|
||||
|
||||
/* Write a message relating to a child. Write it to the child's output
|
||||
/* Write a message in the child's context. Write it to the child's output
|
||||
sync file if present, otherwise to the terminal. */
|
||||
|
||||
static void
|
||||
@ -477,16 +480,27 @@ child_out (const struct child *child, const char *msg, int out)
|
||||
|
||||
if (outfd >= 0)
|
||||
{
|
||||
int t = strlen (msg);
|
||||
int l;
|
||||
lseek (outfd, 0, SEEK_END);
|
||||
write (outfd, msg, strlen (msg));
|
||||
write (outfd, "\n", 1);
|
||||
while (t)
|
||||
{
|
||||
EINTRLOOP (l, write (outfd, msg, t));
|
||||
if (l == t)
|
||||
break;
|
||||
if (l < 0)
|
||||
{
|
||||
perror ("write()");
|
||||
break;
|
||||
}
|
||||
t -= l;
|
||||
msg += l;
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
FILE *outf = out ? stdout : stderr;
|
||||
|
||||
fputs (msg, outf);
|
||||
putc ('\n', outf);
|
||||
fflush (outf);
|
||||
}
|
||||
}
|
||||
@ -503,7 +517,7 @@ child_error (const struct child *child,
|
||||
const char *post = "";
|
||||
const char *dump = "";
|
||||
const struct file *f = child->file;
|
||||
gmk_floc *flocp = &f->cmds->fileinfo;
|
||||
const gmk_floc *flocp = &f->cmds->fileinfo;
|
||||
const char *msg;
|
||||
const char *nm;
|
||||
unsigned int l;
|
||||
@ -529,8 +543,8 @@ child_error (const struct child *child,
|
||||
nm = a;
|
||||
}
|
||||
|
||||
msg = message_s (strlen (nm) + strlen (f->name),
|
||||
0, _("%s: recipe for target '%s' failed"), nm, f->name);
|
||||
msg = message_s (strlen (nm) + strlen (f->name), 0,
|
||||
_("%s: recipe for target '%s' failed"), nm, f->name);
|
||||
child_out (child, msg, 1);
|
||||
|
||||
l = strlen (pre) + strlen (f->name) + strlen (post);
|
||||
@ -539,17 +553,17 @@ child_error (const struct child *child,
|
||||
if (exit_code & 1 != 0)
|
||||
return;
|
||||
|
||||
msg = error_s (l + INTEGER_LENGTH, NILF, _("%s[%s] Error 0x%x%s"),
|
||||
pre, f->name, exit_code, post);
|
||||
msg = error_s (l + INTEGER_LENGTH, NILF,
|
||||
_("%s[%s] Error 0x%x%s"), pre, f->name, exit_code, post);
|
||||
#else
|
||||
if (exit_sig == 0)
|
||||
msg = error_s (l + INTEGER_LENGTH, NILF, _("%s[%s] Error %d%s"),
|
||||
pre, f->name, exit_code, post);
|
||||
msg = error_s (l + INTEGER_LENGTH, NILF,
|
||||
_("%s[%s] Error %d%s"), pre, f->name, exit_code, post);
|
||||
else
|
||||
{
|
||||
const char *s = strsignal (exit_sig);
|
||||
msg = error_s (l + strlen (s) + strlen (dump),
|
||||
NILF, _("%s[%s] %s%s%s"), pre, f->name, s, dump, post);
|
||||
msg = error_s (l + strlen (s) + strlen (dump), NILF,
|
||||
_("%s[%s] %s%s%s"), pre, f->name, s, dump, post);
|
||||
}
|
||||
#endif /* VMS */
|
||||
|
||||
@ -591,52 +605,85 @@ child_handler (int sig UNUSED)
|
||||
}
|
||||
|
||||
#ifdef OUTPUT_SYNC
|
||||
/* Adds file descriptors to the child structure to support output_sync;
|
||||
one for stdout and one for stderr as long as they are (a) open and
|
||||
(b) separate. If stdout and stderr share a device they can share a
|
||||
temp file too. */
|
||||
static int
|
||||
assign_child_tempfiles (struct child *c, int combined)
|
||||
|
||||
/* Set up the sync handle and configure combined_output.
|
||||
Disables output_sync on error. */
|
||||
static void
|
||||
sync_init ()
|
||||
{
|
||||
/* If we don't have a temp file, get one. */
|
||||
if (c->outfd < 0 && c->errfd < 0)
|
||||
#ifdef WINDOWS32
|
||||
if ((!STREAM_OK (stdout) && !STREAM_OK (stderr))
|
||||
|| (sync_handle = create_mutex ()) == -1)
|
||||
{
|
||||
perror_with_name ("output-sync suppressed: ", "stderr");
|
||||
output_sync = 0;
|
||||
}
|
||||
else
|
||||
{
|
||||
combined_output = same_stream (stdout, stderr);
|
||||
prepare_mutex_handle_string (sync_handle);
|
||||
}
|
||||
|
||||
#else
|
||||
if (STREAM_OK (stdout))
|
||||
{
|
||||
struct stat stbuf_o, stbuf_e;
|
||||
|
||||
sync_handle = fileno (stdout);
|
||||
combined_output =
|
||||
fstat (fileno (stdout), &stbuf_o) == 0 &&
|
||||
fstat (fileno (stderr), &stbuf_e) == 0 &&
|
||||
stbuf_o.st_dev == stbuf_e.st_dev &&
|
||||
stbuf_o.st_ino == stbuf_e.st_ino;
|
||||
}
|
||||
else if (STREAM_OK (stderr))
|
||||
sync_handle = fileno (stderr);
|
||||
else
|
||||
{
|
||||
perror_with_name ("output-sync suppressed: ", "stderr");
|
||||
output_sync = 0;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
/* Adds file descriptors to the child structure to support output_sync; one
|
||||
for stdout and one for stderr as long as they are open. If stdout and
|
||||
stderr share a device they can share a temp file too.
|
||||
Will reset output_sync on error. */
|
||||
static void
|
||||
assign_child_tempfiles (struct child *c)
|
||||
{
|
||||
/* If we have a temp file, we're done. */
|
||||
if (c->outfd >= 0 || c->errfd >= 0)
|
||||
return;
|
||||
|
||||
if (STREAM_OK (stdout))
|
||||
{
|
||||
c->outfd = open_tmpfd ();
|
||||
if (c->outfd < 0)
|
||||
goto error;
|
||||
CLOSE_ON_EXEC (c->outfd);
|
||||
}
|
||||
|
||||
if (STREAM_OK (stderr))
|
||||
{
|
||||
if (c->outfd >= 0 && combined)
|
||||
if (c->outfd >= 0 && combined_output)
|
||||
c->errfd = c->outfd;
|
||||
else
|
||||
{
|
||||
c->errfd = open_tmpfd ();
|
||||
if (c->errfd < 0)
|
||||
goto error;
|
||||
CLOSE_ON_EXEC (c->errfd);
|
||||
}
|
||||
}
|
||||
|
||||
return 1;
|
||||
}
|
||||
return;
|
||||
|
||||
/* We already have a temp file. On per-job output, truncate and reset. */
|
||||
if (output_sync == OUTPUT_SYNC_JOB)
|
||||
{
|
||||
error:
|
||||
if (c->outfd >= 0)
|
||||
{
|
||||
lseek(c->outfd, 0, SEEK_SET);
|
||||
ftruncate(c->outfd, 0);
|
||||
}
|
||||
if (c->errfd >= 0 && c->errfd != c->outfd)
|
||||
{
|
||||
lseek(c->errfd, 0, SEEK_SET);
|
||||
ftruncate(c->outfd, 0);
|
||||
}
|
||||
}
|
||||
|
||||
return 1;
|
||||
close (c->outfd);
|
||||
output_sync = 0;
|
||||
}
|
||||
|
||||
/* Support routine for sync_output() */
|
||||
@ -750,6 +797,20 @@ sync_output (struct child *c)
|
||||
/* Exit the critical section. */
|
||||
if (sem)
|
||||
release_semaphore (sem);
|
||||
|
||||
/* Truncate and reset the output, in case we use it again. */
|
||||
if (c->outfd >= 0)
|
||||
{
|
||||
int e;
|
||||
lseek(c->outfd, 0, SEEK_SET);
|
||||
EINTRLOOP (e, ftruncate(c->outfd, 0));
|
||||
}
|
||||
if (c->errfd >= 0 && c->errfd != c->outfd)
|
||||
{
|
||||
int e;
|
||||
lseek(c->errfd, 0, SEEK_SET);
|
||||
EINTRLOOP (e, ftruncate(c->errfd, 0));
|
||||
}
|
||||
}
|
||||
}
|
||||
#endif /* OUTPUT_SYNC */
|
||||
@ -1095,7 +1156,8 @@ reap_children (int block, int err)
|
||||
else
|
||||
{
|
||||
#ifdef OUTPUT_SYNC
|
||||
/* If we're sync'ing per job, write it now. */
|
||||
/* If we're sync'ing per line, write the previous line's
|
||||
output before starting the next one. */
|
||||
if (output_sync == OUTPUT_SYNC_JOB)
|
||||
sync_output (c);
|
||||
#endif
|
||||
@ -1130,8 +1192,7 @@ reap_children (int block, int err)
|
||||
/* When we get here, all the commands for c->file are finished. */
|
||||
|
||||
#ifdef OUTPUT_SYNC
|
||||
/* Synchronize parallel output if requested */
|
||||
if (output_sync)
|
||||
/* Synchronize any remaining parallel output. */
|
||||
sync_output (c);
|
||||
#endif /* OUTPUT_SYNC */
|
||||
|
||||
@ -1334,6 +1395,7 @@ start_job_command (struct child *child)
|
||||
#if !defined(_AMIGA) && !defined(WINDOWS32)
|
||||
static int bad_stdin = -1;
|
||||
#endif
|
||||
int sync_cmd = 0;
|
||||
char *p;
|
||||
/* Must be volatile to silence bogus GCC warning about longjmp/vfork. */
|
||||
volatile int flags;
|
||||
@ -1521,6 +1583,11 @@ start_job_command (struct child *child)
|
||||
fflush (stdout);
|
||||
fflush (stderr);
|
||||
|
||||
/* Are we going to synchronize this command's output? Do so if either we're
|
||||
in SYNC_MAKE mode or this command is not recursive. We'll also check
|
||||
output_sync separately below in case it changes due to error. */
|
||||
sync_cmd = output_sync == OUTPUT_SYNC_MAKE || !(flags & COMMANDS_RECURSE);
|
||||
|
||||
#ifndef VMS
|
||||
#if !defined(WINDOWS32) && !defined(_AMIGA) && !defined(__MSDOS__)
|
||||
|
||||
@ -1646,42 +1713,16 @@ start_job_command (struct child *child)
|
||||
#else /* !__EMX__ */
|
||||
|
||||
#ifdef OUTPUT_SYNC
|
||||
if (output_sync)
|
||||
{
|
||||
static int combined_output;
|
||||
/* If output_sync is turned on, find a resource to
|
||||
synchronize on. This block is traversed only once. */
|
||||
if (sync_handle == -1)
|
||||
{
|
||||
if (STREAM_OK (stdout))
|
||||
{
|
||||
struct stat stbuf_o, stbuf_e;
|
||||
if (output_sync && sync_handle == -1)
|
||||
sync_init();
|
||||
|
||||
sync_handle = fileno (stdout);
|
||||
combined_output =
|
||||
fstat (fileno (stdout), &stbuf_o) == 0 &&
|
||||
fstat (fileno (stderr), &stbuf_e) == 0 &&
|
||||
stbuf_o.st_dev == stbuf_e.st_dev &&
|
||||
stbuf_o.st_ino == stbuf_e.st_ino;
|
||||
}
|
||||
else if (STREAM_OK (stderr))
|
||||
sync_handle = fileno (stderr);
|
||||
if (output_sync && sync_cmd)
|
||||
/* If we still want to sync, make sure we have temp files. */
|
||||
assign_child_tempfiles (child);
|
||||
else
|
||||
{
|
||||
perror_with_name ("output-sync suppressed: ", "stderr");
|
||||
output_sync = 0;
|
||||
}
|
||||
}
|
||||
|
||||
/* If it still looks like we can synchronize, create a temp
|
||||
file to hold stdout (and one for stderr if separate). */
|
||||
if (output_sync == OUTPUT_SYNC_MAKE
|
||||
|| (output_sync && !(flags & COMMANDS_RECURSE)))
|
||||
{
|
||||
if (!assign_child_tempfiles (child, combined_output))
|
||||
output_sync = 0;
|
||||
}
|
||||
}
|
||||
/* We don't want to sync this command: to avoid misordered
|
||||
output ensure any already-synched content is written. */
|
||||
sync_output (child);
|
||||
#endif /* OUTPUT_SYNC */
|
||||
|
||||
child->pid = vfork ();
|
||||
@ -1710,8 +1751,7 @@ start_job_command (struct child *child)
|
||||
#ifdef OUTPUT_SYNC
|
||||
/* Divert child output if output_sync in use. Don't capture
|
||||
recursive make output unless we are synchronizing "make" mode. */
|
||||
if (output_sync && (output_sync == OUTPUT_SYNC_MAKE
|
||||
|| !(flags & COMMANDS_RECURSE)))
|
||||
if (output_sync && sync_cmd)
|
||||
{
|
||||
int outfd = fileno (stdout);
|
||||
int errfd = fileno (stderr);
|
||||
@ -1812,38 +1852,16 @@ start_job_command (struct child *child)
|
||||
char* arg0;
|
||||
|
||||
#ifdef OUTPUT_SYNC
|
||||
if (output_sync)
|
||||
{
|
||||
static int combined_output;
|
||||
/* If output_sync is turned on, create a mutex to
|
||||
synchronize on. This is done only once. */
|
||||
if (sync_handle == -1)
|
||||
{
|
||||
if ((!STREAM_OK (stdout) && !STREAM_OK (stderr))
|
||||
|| (sync_handle = create_mutex ()) == -1)
|
||||
{
|
||||
perror_with_name ("output-sync suppressed: ", "stderr");
|
||||
output_sync = 0;
|
||||
}
|
||||
if (output_sync && sync_handle == -1)
|
||||
sync_init();
|
||||
|
||||
if (output_sync && sync_cmd)
|
||||
/* If we still want to sync, make sure we have temp files. */
|
||||
assign_child_tempfiles (child);
|
||||
else
|
||||
{
|
||||
combined_output = same_stream (stdout, stderr);
|
||||
prepare_mutex_handle_string (sync_handle);
|
||||
}
|
||||
}
|
||||
/* If we can synchronize, create a temporary file to hold
|
||||
child's stdout, and another one for its stderr, if they
|
||||
are separate. */
|
||||
if (output_sync == OUTPUT_SYNC_MAKE
|
||||
|| (output_sync && !(flags & COMMANDS_RECURSE)))
|
||||
{
|
||||
if (!assign_child_tempfiles (child, combined_output))
|
||||
{
|
||||
perror_with_name ("output-sync suppressed: ", "stderr");
|
||||
output_sync = 0;
|
||||
}
|
||||
}
|
||||
}
|
||||
/* We don't want to sync this command: to avoid misordered output
|
||||
ensure any already-synched content is written. */
|
||||
sync_output (child);
|
||||
#endif /* OUTPUT_SYNC */
|
||||
|
||||
/* make UNC paths safe for CreateProcess -- backslash format */
|
||||
@ -1859,8 +1877,7 @@ start_job_command (struct child *child)
|
||||
#ifdef OUTPUT_SYNC
|
||||
/* Divert child output if output_sync in use. Don't capture
|
||||
recursive make output unless we are synchronizing "make" mode. */
|
||||
if (output_sync && (output_sync == OUTPUT_SYNC_MAKE
|
||||
|| !(flags & COMMANDS_RECURSE)))
|
||||
if (output_sync && sync_cmd)
|
||||
hPID = process_easy(argv, child->environment,
|
||||
child->outfd, child->errfd);
|
||||
else
|
||||
|
||||
19
misc.c
19
misc.c
@ -182,7 +182,8 @@ concat (unsigned int num, ...)
|
||||
/* If we had a standard-compliant vsnprintf() this would be a lot simpler.
|
||||
Maybe in the future we'll include gnulib's version. */
|
||||
|
||||
/* Return a formatted string buffer. */
|
||||
/* Return a formatted string buffer.
|
||||
LENGTH must be the maximum length of all format arguments, stringified. */
|
||||
|
||||
const char *
|
||||
message_s (unsigned int length, int prefix, const char *fmt, ...)
|
||||
@ -193,7 +194,7 @@ message_s (unsigned int length, int prefix, const char *fmt, ...)
|
||||
va_list args;
|
||||
|
||||
/* Compute the maximum buffer size we'll need, and make sure we have it. */
|
||||
length += strlen (fmt) + strlen (program) + 4 + INTEGER_LENGTH + 1;
|
||||
length += strlen (fmt) + strlen (program) + 4 + INTEGER_LENGTH + 2;
|
||||
if (length > bsize)
|
||||
{
|
||||
bsize = length * 2;
|
||||
@ -214,10 +215,13 @@ message_s (unsigned int length, int prefix, const char *fmt, ...)
|
||||
vsprintf (bp, fmt, args);
|
||||
va_end (args);
|
||||
|
||||
strcat (bp, "\n");
|
||||
|
||||
return buffer;
|
||||
}
|
||||
|
||||
/* Return a formatted error message in a buffer. */
|
||||
/* Return a formatted error message in a buffer.
|
||||
LENGTH must be the maximum length of all format arguments, stringified. */
|
||||
|
||||
const char *
|
||||
error_s (unsigned int length, const gmk_floc *flocp, const char *fmt, ...)
|
||||
@ -228,7 +232,7 @@ error_s (unsigned int length, const gmk_floc *flocp, const char *fmt, ...)
|
||||
va_list args;
|
||||
|
||||
/* Compute the maximum buffer size we'll need, and make sure we have it. */
|
||||
length += (strlen (fmt) + strlen (program) + 4 + INTEGER_LENGTH + 1
|
||||
length += (strlen (fmt) + strlen (program) + 4 + INTEGER_LENGTH + 2
|
||||
+ (flocp && flocp->filenm ? strlen (flocp->filenm) : 0));
|
||||
if (length > bsize)
|
||||
{
|
||||
@ -249,10 +253,13 @@ error_s (unsigned int length, const gmk_floc *flocp, const char *fmt, ...)
|
||||
vsprintf (bp, fmt, args);
|
||||
va_end (args);
|
||||
|
||||
strcat (bp, "\n");
|
||||
|
||||
return buffer;
|
||||
}
|
||||
|
||||
/* Print a message on stdout. */
|
||||
/* Print a message on stdout. We could use message_s() to format it but then
|
||||
we'd need a va_list version... */
|
||||
|
||||
void
|
||||
message (int prefix, const char *fmt, ...)
|
||||
@ -950,7 +957,7 @@ char *mktemp (char *template);
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/* This is only used by output-sync, and it may not be portable to Windows. */
|
||||
/* This is only used by output-sync, and it may not be portable. */
|
||||
#ifdef OUTPUT_SYNC
|
||||
|
||||
/* Returns a file descriptor to a temporary file. The file is automatically
|
||||
|
||||
@ -1,3 +1,8 @@
|
||||
2013-05-04 Paul Smith <psmith@gnu.org>
|
||||
|
||||
* scripts/features/output-sync (output_sync_set): New test for
|
||||
ordered recursive output for -Ojob / -Otarget.
|
||||
|
||||
2013-05-03 Eli Zaretskii <eliz@gnu.org>
|
||||
|
||||
* scripts/features/load: Fix signatures of testload_gmk_setup and
|
||||
|
||||
@ -244,5 +244,15 @@ foo: end
|
||||
# Remove temporary directories and contents.
|
||||
output_sync_clean();
|
||||
|
||||
# Ensure recursion doesn't mis-order or double-print output
|
||||
run_make_test(qq!
|
||||
all:
|
||||
\t\@echo foo
|
||||
\t\@+echo bar
|
||||
!,
|
||||
'-j -Ojob', "foo\nbar\n");
|
||||
|
||||
run_make_test(undef, '-j -Otarget', "foo\nbar\n");
|
||||
|
||||
# This tells the test driver that the perl test script executed properly.
|
||||
1;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user