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Diffstat (limited to 'devel/linuxthreads/files/README.FreeBSD')
| -rw-r--r-- | devel/linuxthreads/files/README.FreeBSD | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/devel/linuxthreads/files/README.FreeBSD b/devel/linuxthreads/files/README.FreeBSD index 8cd203c2dca7..31b59b43b2b4 100644 --- a/devel/linuxthreads/files/README.FreeBSD +++ b/devel/linuxthreads/files/README.FreeBSD @@ -90,3 +90,25 @@ set at 20 + 16 * MAXUSERS. initializers. Linking the shared linuxthreads library before any such library causes the liblgcc_r.a version of those functions to be used. Use liblstdc++ and liblsupc++. + +4) Exit handling is broken. + + If the linuxthreads library has been compiled with + LINUXTHREADS_DETECT_UNSAFE_EXIT defined in the ports makefile then + the library tries to avoid further calls to functions registered + with atexit if not called from the main thread or if other threads + were active. Since this implicitly indicates a failure to do + proper cleanup, the exit code is then changed to 1. + + If the linuxthreads library has been compiled without + LINUXTHREADS_DETECT_UNSAFE_EXIT, then calls to exit() has a + slightly higher probability of crashing or hanging the program when + other threads are active. If another thread than the main thread + performs the exit call, the exit code will appear to be 0. + + If multiple threads calls exit then the application will likely + crash. + + If other threads has been joined by the main thread before it calls + exit then exit handling should be fairly safe and the correct exit + code can be detected by the parent process. |