27 lines
907 B
Diff
27 lines
907 B
Diff
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diff -up ksh-20120801/src/cmd/ksh93/include/jobs.h.locking ksh-20120801/src/cmd/ksh93/include/jobs.h
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--- ksh-20120801/src/cmd/ksh93/include/jobs.h.locking 2014-06-27 15:51:07.144923719 +0200
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+++ ksh-20120801/src/cmd/ksh93/include/jobs.h 2014-06-27 15:52:56.463272276 +0200
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@@ -149,15 +149,18 @@ extern struct jobs job;
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#define vmbusy() 0
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#endif
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-#define job_lock() (job.in_critical++)
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+#define asoincint(p) __sync_fetch_and_add(p,1)
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+#define asodecint(p) __sync_fetch_and_sub(p,1)
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+
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+#define job_lock() asoincint(&job.in_critical)
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#define job_unlock() \
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do { \
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int sig; \
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- if (!--job.in_critical && (sig = job.savesig)) \
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+ if (asodecint(&job.in_critical)==1 && (sig = job.savesig)) \
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{ \
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- if (!job.in_critical++ && !vmbusy()) \
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+ if (!asoincint(&job.in_critical) && !vmbusy()) \
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job_reap(sig); \
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- job.in_critical--; \
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+ asodecint(&job.in_critical); \
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} \
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} while(0)
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