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author | phk <phk@FreeBSD.org> | 2004-11-12 08:58:07 +0000 |
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committer | phk <phk@FreeBSD.org> | 2004-11-12 08:58:07 +0000 |
commit | eb0fa827fcfd13a6fb449fdc5fe1a3c114b2f0a0 (patch) | |
tree | 8b295cb4fe4d748e59a9ca3dbb4896739065fcbd /usr.bin/make/job.h | |
parent | 24fe3160f6855d1e448487cea73895c8f79a7edd (diff) | |
download | FreeBSD-src-eb0fa827fcfd13a6fb449fdc5fe1a3c114b2f0a0.zip FreeBSD-src-eb0fa827fcfd13a6fb449fdc5fe1a3c114b2f0a0.tar.gz |
Add code to enforce the paralleism count (-j N) for the entire tree
of submakes spawned during processing.
We create a fifo and stuff one character into it for each job we are
allowed to run. The name of the fifo is passed to child processes
in the MAKE_JOBS_FIFO environment variable.
A make which finds this variable on startup will open the fifo and
only spawn jobs when it managed to read a token from the fifo.
When the job completes a token is writen back to the fifo.
Slave make processes get one token for free: the one their parent
make got in order to run them. This makes the make processes
themselves invisible in the process counts.
The net effect is that "make -j 12 -s buildworld" will start at
most 12 jobs at the same time, instead of as previously up to
65 jobs would get started.
Diffstat (limited to 'usr.bin/make/job.h')
-rw-r--r-- | usr.bin/make/job.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/usr.bin/make/job.h b/usr.bin/make/job.h index 09fe8fe..25aa511 100644 --- a/usr.bin/make/job.h +++ b/usr.bin/make/job.h @@ -209,7 +209,7 @@ void Shell_Init(void); void Job_Touch(GNode *, Boolean); Boolean Job_CheckCommands(GNode *, void (*abortProc)(const char *, ...)); void Job_CatchChildren(Boolean); -void Job_CatchOutput(void); +void Job_CatchOutput(int flag); void Job_Make(GNode *); void Job_Init(int); Boolean Job_Full(void); |