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Add missing tracing to qemu_mallocz()
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Consolidate oom_check() functions
This consolidates the duplicated oom_check() functions, as well assplitting them into OS dependant versions to avoid the #ifdefgrossness that was present in the old osdep.c version.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>...
trace: Trace qemu_malloc() and qemu_vmalloc()
It is often useful to instrument memory management functions in order tofind leaks or performance problems. This patch adds trace events forthe memory allocation primitives.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
cow: stop using mmap
We don't have an equivalent to mmap in the qemu block API, so read andwrite the bitmap directly. At least in the dumb implementation addedin this patch this is a lot less efficient, but it means cow can alsowork on windows, and over nbd or curl. And it fixes qemu-iotests testcase...
Use calloc in qemu_mallocz.
Avoids the memset if the allocator has gotten new zeroedstorage from the operating system.
Signed-off-by: Richard Henderson <rth@twiddle.net>Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Simplify qemu_realloc()
No functional change. Bonus: looks just like qemu_malloc() now.
Signed-off-by: Markus Armbruster <armbru@redhat.com>Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Do not abort on qemu_malloc(0) in production builds
qemu_malloc() does not allow size=0 to be passed in and aborts on this behavior.
Unfortunately, there is good reason to believe that within qemu, there are anumber of, so far, undetected places that assume size=0 can be safely passed....
Format per CODING_STYLE
Signed-off-by: malc <av1474@comtv.ru>
Abort on attempts to allocate zero bytes
http://marc.info/?t=124267873300015&r=1&w=2
Fix qemu_realloc() (Kevin Wolf)
For qemu_realloc with size == 0 a result of NULL is perfectly fine
Signed-off-by: Kevin Wolf <kwolf@suse.de>Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6615 c046a42c-6fe2-441c-8c8c-71466251a162
Replace exit() in oom_check with abort()
So that we can get a core dump with a stack trace.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6542 c046a42c-6fe2-441c-8c8c-71466251a162
Terminate emulation on memory allocation failure (Avi Kivity)
Memory allocation failures are a very rare condition on virtual-memoryhosts. They are also very difficult to handle correctly (especially in ahardware emulation context). Because of this, it is better to gracefully...
Add qemu_strndup: qemu_strdup with length limit.
Also optimise qemu_strdup by using memcpy - using pstrcpy is usuallysuboptimal.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5653 c046a42c-6fe2-441c-8c8c-71466251a162
Fix error introduced by r5044
qemu_strdup() doesn't copy a last character because of off by one error.
Signed-off-by: Gleb Natapov <gleb@qumranet.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5086 c046a42c-6fe2-441c-8c8c-71466251a162
Fix OpenBSD linker warnings
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5044 c046a42c-6fe2-441c-8c8c-71466251a162
Add qemu_realloc(), by Gerd Hoffmann.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4986 c046a42c-6fe2-441c-8c8c-71466251a162
Prevent guest reusing host memory allocations.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4710 c046a42c-6fe2-441c-8c8c-71466251a162