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| author | Christian Neukirchen <chneukirchen@gmail.com> | 2015-08-03 13:53:25 +0200 |
|---|---|---|
| committer | Christian Neukirchen <chneukirchen@gmail.com> | 2015-08-03 13:53:25 +0200 |
| commit | 91dae7a9bcc0a73fe684d9def8ca6224c5de0213 (patch) | |
| tree | 7743bd7c3c5afafe486a1fe559570c083e048552 | |
| parent | a8c5f2f79d773c98318f5f8708579845c7904140 (diff) | |
| download | nq-91dae7a9bcc0a73fe684d9def8ca6224c5de0213.tar.gz nq-91dae7a9bcc0a73fe684d9def8ca6224c5de0213.tar.xz nq-91dae7a9bcc0a73fe684d9def8ca6224c5de0213.zip | |
flock(2) is not actually POSIX...
| -rw-r--r-- | Makefile | 2 | ||||
| -rw-r--r-- | README.md | 5 | ||||
| -rw-r--r-- | nq.c | 5 |
3 files changed, 7 insertions, 5 deletions
diff --git a/Makefile b/Makefile index 4df9cf2..c6cc8d6 100644 --- a/Makefile +++ b/Makefile @@ -1,4 +1,4 @@ -CFLAGS=-g -std=c89 -Wall -O2 +CFLAGS=-g -Wall -O2 all: nq nq: nq.c clean: diff --git a/README.md b/README.md index 15805f7..cc7fe58 100644 --- a/README.md +++ b/README.md @@ -4,8 +4,9 @@ These small utilities allow creating very lightweight job queue systems which require no setup, maintenance, supervision, or any long-running processes. -`nq` should run on any POSIX.1-2008 compliant system using directories -where flock(2) works. +`nq` should run on any POSIX.1-2008 compliant system which also +provides a working flock(2). Tested on Linux 4.1, OpenBSD 5.7 and +FreeBSD 10.1. The intended purpose is ad-hoc queuing of command lines (e.g. for building several targets of a Makefile, downloading multiple files one diff --git a/nq.c b/nq.c index 0bbb009..ba8dc1c 100644 --- a/nq.c +++ b/nq.c @@ -3,7 +3,7 @@ * -w ... wait for all jobs/listed jobs queued so far to finish * -t ... exit 0 if no (listed) job needs waiting * - * - requires POSIX.1-2008 + * - requires POSIX.1-2008 and having flock(2) * - enforcing order works like this: * - every job has a flock(2)ed output file ala ",TIMESTAMP.PID" * - every job starts only after all earlier flock(2)ed files finished @@ -19,7 +19,8 @@ * http://creativecommons.org/publicdomain/zero/1.0/ */ -#define _POSIX_C_SOURCE 200809L +/* for FreeBSD. */ +#define _WITH_DPRINTF #include <sys/file.h> #include <sys/stat.h> |