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| author | Ivan Maidanski <ivmai@mail.ru> | 2021-09-01 23:32:14 +0300 |
|---|---|---|
| committer | Ivan Maidanski <ivmai@mail.ru> | 2021-09-01 23:58:59 +0300 |
| commit | 8ab50d3371a7106aa0d4327280fd97d98cdc65e5 (patch) | |
| tree | 0d6a4f570cf93430fba8d4a83d1b57410162b9e5 /include | |
| parent | 3ae3260af113fb3c3132b657655fbe40fec4b36e (diff) | |
| download | bdwgc-8ab50d3371a7106aa0d4327280fd97d98cdc65e5.tar.gz | |
Fix GC_proc_fd value in child process at fork (Solaris)
In case of PROC_VDB mode is initialized, GC_proc_fd contains a file
descriptor to "/proc/<pid>/pagedata". After forking, the child
process has a different pid value, thus the old file descriptor
should be closed and the one with the updated file name should be
opened in turn.
* include/private/gc_priv.h [!GC_DISABLE_INCREMENTAL
&& CAN_HANDLE_FORK] (GC_dirty_update_child): Declare (as a function
or as a macro).
* os_dep.c [PROC_VDB] (GC_proc_fd): Initialize to -1 (instead of 0).
* os_dep.c [PROC_VDB] (proc_dirty_open_files): New static function
(part of code is moved from GC_dirty_init).
* os_dep.c [PROC_VDB && CAN_HANDLE_FORK] (GC_dirty_update_child): New
GC_INNER function.
* os_dep.c [PROC_VDB] (GC_dirty_init): Call proc_dirty_open_files().
* pthread_support.c [CAN_HANDLE_FORK && !GC_DISABLE_INCREMENTAL]
(fork_child_proc): Call GC_dirty_update_child().
Diffstat (limited to 'include')
| -rw-r--r-- | include/private/gc_priv.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/private/gc_priv.h b/include/private/gc_priv.h index 7b9bab1c..6685c07a 100644 --- a/include/private/gc_priv.h +++ b/include/private/gc_priv.h @@ -2416,6 +2416,17 @@ GC_EXTERN GC_bool GC_print_back_height; /* pointer-free system call buffers in the heap are */ /* not protected. */ +# ifdef CAN_HANDLE_FORK +# if defined(PROC_VDB) + GC_INNER void GC_dirty_update_child(void); + /* Update pid-specific resources (like /proc file */ + /* descriptors) needed by the dirty bits implementation */ + /* after fork in the child process. */ +# else +# define GC_dirty_update_child() (void)0 +# endif +# endif /* CAN_HANDLE_FORK */ + GC_INNER GC_bool GC_dirty_init(void); /* Returns true if dirty bits are maintained (otherwise */ /* it is OK to be called again if the client invokes */ |