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osproc: add warning about using waitForExit without poParentStreams

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This commit is contained in:
Michał Zieliński 2014-02-27 19:48:53 +01:00
commit f4371bfef8
1 changed files with 3 additions and 0 deletions
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3
lib/pure/osproc.nim
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@ -168,6 +168,9 @@ proc processID*(p: PProcess): int {.rtl, extern: "nosp$1".} =
proc waitForExit*(p: PProcess, timeout: int = -1): int {.rtl,
extern: "nosp$1", tags: [].}
## waits for the process to finish and returns `p`'s error code.
##
## **Warning**: Be careful when using waitForExit for processes created without
## poParentStreams because they may fill output buffers, causing deadlock.
proc peekExitCode*(p: PProcess): int {.tags: [].}
## return -1 if the process is still running. Otherwise the process' exit code