diff options
Diffstat (limited to 'src/3rdparty/pcre2/src/sljit/allocator_src/sljitExecAllocatorPosix.c')
-rw-r--r-- | src/3rdparty/pcre2/src/sljit/allocator_src/sljitExecAllocatorPosix.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/3rdparty/pcre2/src/sljit/allocator_src/sljitExecAllocatorPosix.c b/src/3rdparty/pcre2/src/sljit/allocator_src/sljitExecAllocatorPosix.c new file mode 100644 index 0000000000..a775f5629a --- /dev/null +++ b/src/3rdparty/pcre2/src/sljit/allocator_src/sljitExecAllocatorPosix.c @@ -0,0 +1,62 @@ +/* + * Stack-less Just-In-Time compiler + * + * Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, are + * permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this list of + * conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright notice, this list + * of conditions and the following disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT + * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED + * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/types.h> +#include <sys/mman.h> + +static SLJIT_INLINE void* alloc_chunk(sljit_uw size) +{ + void *retval; + int prot = PROT_READ | PROT_WRITE | PROT_EXEC; + int flags = MAP_PRIVATE; + int fd = -1; + +#ifdef PROT_MAX + prot |= PROT_MAX(prot); +#endif + +#ifdef MAP_ANON + flags |= MAP_ANON; +#else /* !MAP_ANON */ + if (SLJIT_UNLIKELY((dev_zero < 0) && open_dev_zero())) + return NULL; + + fd = dev_zero; +#endif /* MAP_ANON */ + + retval = mmap(NULL, size, prot, flags, fd, 0); + if (retval == MAP_FAILED) + return NULL; + + return retval; +} + +static SLJIT_INLINE void free_chunk(void *chunk, sljit_uw size) +{ + munmap(chunk, size); +} + +#include "sljitExecAllocatorCore.c" |