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HACKING: add memory management rules 

Add memory management rules, somewhat like libvirt HACKING.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
This commit is contained in:
Blue Swirl 2010-09-10 18:52:52 +00:00
parent 84174436a6
commit 54b2cc5030
1 changed files with 14 additions and 0 deletions
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@ -72,3 +72,17 @@ Typedefs are used to eliminate the redundant 'struct' keyword.
2.4. Reserved namespaces in C and POSIX 2.4. Reserved namespaces in C and POSIX
Underscore capital, double underscore, and underscore 't' suffixes should be Underscore capital, double underscore, and underscore 't' suffixes should be
avoided. avoided.
3. Low level memory management
Use of the malloc/free/realloc/calloc/valloc/memalign/posix_memalign
APIs is not allowed in the QEMU codebase. Instead of these routines,
use the replacement qemu_malloc/qemu_mallocz/qemu_realloc/qemu_free or
qemu_vmalloc/qemu_memalign/qemu_vfree APIs.
Please note that NULL check for the qemu_malloc result is redundant and
that qemu_malloc() call with zero size is not allowed.
Memory allocated by qemu_vmalloc or qemu_memalign must be freed with
qemu_vfree, since breaking this will cause problems on Win32 and user
emulators.