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| author | Corinna Vinschen <corinna@vinschen.de> | 2006-07-13 08:33:34 +0000 |
|---|---|---|
| committer | Corinna Vinschen <corinna@vinschen.de> | 2006-07-13 08:33:34 +0000 |
| commit | f6105f89d5a809cb2fbcac318da9fa8981576a51 (patch) | |
| tree | 0758a73e314ae10f937f6e6ca9bd983fa7f28242 /winsup/cygwin/exceptions.cc | |
| parent | d44b979536f0e922713ab132a871c062f61ea376 (diff) | |
| download | cygnal-f6105f89d5a809cb2fbcac318da9fa8981576a51.tar.gz cygnal-f6105f89d5a809cb2fbcac318da9fa8981576a51.tar.bz2 cygnal-f6105f89d5a809cb2fbcac318da9fa8981576a51.zip | |
* exceptions.cc (_cygtls::handle_exceptions): Call new
mmap_is_attached_or_noreserve_page function in case of access violation
and allow application to retry access on noreserve pages.
* mmap.cc (mmap_is_attached_or_noreserve_page): Changed from
mmap_is_attached_page. Handle also noreserve pages now. Change
comment accordingly.
* winsup.h (mmap_is_attached_or_noreserve_page): Declare instead of
mmap_is_attached_page.
Diffstat (limited to 'winsup/cygwin/exceptions.cc')
| -rw-r--r-- | winsup/cygwin/exceptions.cc | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/winsup/cygwin/exceptions.cc b/winsup/cygwin/exceptions.cc index 4d078dd10..12c6e0687 100644 --- a/winsup/cygwin/exceptions.cc +++ b/winsup/cygwin/exceptions.cc @@ -526,17 +526,21 @@ _cygtls::handle_exceptions (EXCEPTION_RECORD *e, exception_list *frame, CONTEXT break; case STATUS_ACCESS_VIOLATION: - if (mmap_is_attached_page (e->ExceptionInformation[1])) - { + switch (mmap_is_attached_or_noreserve_page (e->ExceptionInformation[1])) + { + case 2: /* MAP_NORESERVE page, now commited. */ + return 0; + case 1: /* MAP_NORESERVE page, commit failed, or + access to mmap page beyond EOF. */ si.si_signo = SIGBUS; si.si_code = BUS_OBJERR; - } - else - { + break; + default: MEMORY_BASIC_INFORMATION m; VirtualQuery ((PVOID) e->ExceptionInformation[1], &m, sizeof m); si.si_signo = SIGSEGV; si.si_code = m.State == MEM_FREE ? SEGV_MAPERR : SEGV_ACCERR; + break; } break; |