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-rw-r--r--src/3rdparty/pcre2/src/sljit/sljitUtils.c161
1 files changed, 116 insertions, 45 deletions
diff --git a/src/3rdparty/pcre2/src/sljit/sljitUtils.c b/src/3rdparty/pcre2/src/sljit/sljitUtils.c
index 39f6a44b24..0276fa1b8b 100644
--- a/src/3rdparty/pcre2/src/sljit/sljitUtils.c
+++ b/src/3rdparty/pcre2/src/sljit/sljitUtils.c
@@ -152,15 +152,23 @@ SLJIT_API_FUNC_ATTRIBUTE void SLJIT_FUNC sljit_release_lock(void)
#ifdef _WIN32
#include "windows.h"
-#else
+#else /* !_WIN32 */
/* Provides mmap function. */
#include <sys/types.h>
#include <sys/mman.h>
+
#ifndef MAP_ANON
#ifdef MAP_ANONYMOUS
#define MAP_ANON MAP_ANONYMOUS
-#endif
-#endif
+#endif /* MAP_ANONYMOUS */
+#endif /* !MAP_ANON */
+
+#ifndef MADV_DONTNEED
+#ifdef POSIX_MADV_DONTNEED
+#define MADV_DONTNEED POSIX_MADV_DONTNEED
+#endif /* POSIX_MADV_DONTNEED */
+#endif /* !MADV_DONTNEED */
+
/* For detecting the page size. */
#include <unistd.h>
@@ -198,35 +206,85 @@ static SLJIT_INLINE sljit_s32 open_dev_zero(void)
#endif /* SLJIT_SINGLE_THREADED */
-#endif
+#endif /* !MAP_ANON */
-#endif
+#endif /* _WIN32 */
#endif /* SLJIT_UTIL_STACK || SLJIT_EXECUTABLE_ALLOCATOR */
+#endif /* SLJIT_EXECUTABLE_ALLOCATOR || SLJIT_UTIL_GLOBAL_LOCK */
+
#if (defined SLJIT_UTIL_STACK && SLJIT_UTIL_STACK)
-/* Planning to make it even more clever in the future. */
-static sljit_sw sljit_page_align = 0;
+#if (defined SLJIT_UTIL_SIMPLE_STACK_ALLOCATION && SLJIT_UTIL_SIMPLE_STACK_ALLOCATION)
SLJIT_API_FUNC_ATTRIBUTE struct sljit_stack* SLJIT_FUNC sljit_allocate_stack(sljit_uw start_size, sljit_uw max_size, void *allocator_data)
{
struct sljit_stack *stack;
void *ptr;
-#ifdef _WIN32
- SYSTEM_INFO si;
-#endif
SLJIT_UNUSED_ARG(allocator_data);
+
if (start_size > max_size || start_size < 1)
return NULL;
+ stack = (struct sljit_stack*)SLJIT_MALLOC(sizeof(struct sljit_stack), allocator_data);
+ if (stack == NULL)
+ return NULL;
+
+ ptr = SLJIT_MALLOC(max_size, allocator_data);
+ if (ptr == NULL) {
+ SLJIT_FREE(stack, allocator_data);
+ return NULL;
+ }
+
+ stack->min_start = (sljit_u8 *)ptr;
+ stack->end = stack->min_start + max_size;
+ stack->start = stack->end - start_size;
+ stack->top = stack->end;
+ return stack;
+}
+
+SLJIT_API_FUNC_ATTRIBUTE void SLJIT_FUNC sljit_free_stack(struct sljit_stack *stack, void *allocator_data)
+{
+ SLJIT_UNUSED_ARG(allocator_data);
+ SLJIT_FREE((void*)stack->min_start, allocator_data);
+ SLJIT_FREE(stack, allocator_data);
+}
+
+SLJIT_API_FUNC_ATTRIBUTE sljit_u8 *SLJIT_FUNC sljit_stack_resize(struct sljit_stack *stack, sljit_u8 *new_start)
+{
+ if ((new_start < stack->min_start) || (new_start >= stack->end))
+ return NULL;
+ stack->start = new_start;
+ return new_start;
+}
+
+#else /* !SLJIT_UTIL_SIMPLE_STACK_ALLOCATION */
+
#ifdef _WIN32
+
+SLJIT_INLINE static sljit_sw get_page_alignment(void) {
+ SYSTEM_INFO si;
+ static sljit_sw sljit_page_align;
if (!sljit_page_align) {
GetSystemInfo(&si);
sljit_page_align = si.dwPageSize - 1;
}
-#else
+ return sljit_page_align;
+}
+
+SLJIT_API_FUNC_ATTRIBUTE void SLJIT_FUNC sljit_free_stack(struct sljit_stack *stack, void *allocator_data)
+{
+ SLJIT_UNUSED_ARG(allocator_data);
+ VirtualFree((void*)stack->min_start, 0, MEM_RELEASE);
+ SLJIT_FREE(stack, allocator_data);
+}
+
+#else /* ! defined _WIN32 */
+
+SLJIT_INLINE static sljit_sw get_page_alignment(void) {
+ static sljit_sw sljit_page_align;
if (!sljit_page_align) {
sljit_page_align = sysconf(_SC_PAGESIZE);
/* Should never happen. */
@@ -234,14 +292,36 @@ SLJIT_API_FUNC_ATTRIBUTE struct sljit_stack* SLJIT_FUNC sljit_allocate_stack(slj
sljit_page_align = 4096;
sljit_page_align--;
}
-#endif
+ return sljit_page_align;
+}
+
+SLJIT_API_FUNC_ATTRIBUTE void SLJIT_FUNC sljit_free_stack(struct sljit_stack *stack, void *allocator_data)
+{
+ SLJIT_UNUSED_ARG(allocator_data);
+ munmap((void*)stack->min_start, stack->end - stack->min_start);
+ SLJIT_FREE(stack, allocator_data);
+}
+
+#endif /* defined _WIN32 */
+
+SLJIT_API_FUNC_ATTRIBUTE struct sljit_stack* SLJIT_FUNC sljit_allocate_stack(sljit_uw start_size, sljit_uw max_size, void *allocator_data)
+{
+ struct sljit_stack *stack;
+ void *ptr;
+ sljit_sw page_align;
+
+ SLJIT_UNUSED_ARG(allocator_data);
+
+ if (start_size > max_size || start_size < 1)
+ return NULL;
stack = (struct sljit_stack*)SLJIT_MALLOC(sizeof(struct sljit_stack), allocator_data);
- if (!stack)
+ if (stack == NULL)
return NULL;
/* Align max_size. */
- max_size = (max_size + sljit_page_align) & ~sljit_page_align;
+ page_align = get_page_alignment();
+ max_size = (max_size + page_align) & ~page_align;
#ifdef _WIN32
ptr = VirtualAlloc(NULL, max_size, MEM_RESERVE, PAGE_READWRITE);
@@ -258,18 +338,18 @@ SLJIT_API_FUNC_ATTRIBUTE struct sljit_stack* SLJIT_FUNC sljit_allocate_stack(slj
sljit_free_stack(stack, allocator_data);
return NULL;
}
-#else
+#else /* !_WIN32 */
#ifdef MAP_ANON
ptr = mmap(NULL, max_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
-#else
+#else /* !MAP_ANON */
if (dev_zero < 0) {
- if (open_dev_zero()) {
+ if (open_dev_zero() != 0) {
SLJIT_FREE(stack, allocator_data);
return NULL;
}
}
ptr = mmap(NULL, max_size, PROT_READ | PROT_WRITE, MAP_PRIVATE, dev_zero, 0);
-#endif
+#endif /* MAP_ANON */
if (ptr == MAP_FAILED) {
SLJIT_FREE(stack, allocator_data);
return NULL;
@@ -277,35 +357,28 @@ SLJIT_API_FUNC_ATTRIBUTE struct sljit_stack* SLJIT_FUNC sljit_allocate_stack(slj
stack->min_start = (sljit_u8 *)ptr;
stack->end = stack->min_start + max_size;
stack->start = stack->end - start_size;
-#endif
+#endif /* _WIN32 */
+
stack->top = stack->end;
return stack;
}
-#undef PAGE_ALIGN
-
-SLJIT_API_FUNC_ATTRIBUTE void SLJIT_FUNC sljit_free_stack(struct sljit_stack *stack, void *allocator_data)
-{
- SLJIT_UNUSED_ARG(allocator_data);
-#ifdef _WIN32
- VirtualFree((void*)stack->min_start, 0, MEM_RELEASE);
-#else
- munmap((void*)stack->min_start, stack->end - stack->min_start);
-#endif
- SLJIT_FREE(stack, allocator_data);
-}
-
SLJIT_API_FUNC_ATTRIBUTE sljit_u8 *SLJIT_FUNC sljit_stack_resize(struct sljit_stack *stack, sljit_u8 *new_start)
{
+#if defined _WIN32 || defined(MADV_DONTNEED)
sljit_uw aligned_old_start;
sljit_uw aligned_new_start;
+ sljit_sw page_align;
+#endif
if ((new_start < stack->min_start) || (new_start >= stack->end))
return NULL;
#ifdef _WIN32
- aligned_new_start = (sljit_uw)new_start & ~sljit_page_align;
- aligned_old_start = ((sljit_uw)stack->start) & ~sljit_page_align;
+ page_align = get_page_alignment();
+
+ aligned_new_start = (sljit_uw)new_start & ~page_align;
+ aligned_old_start = ((sljit_uw)stack->start) & ~page_align;
if (aligned_new_start != aligned_old_start) {
if (aligned_new_start < aligned_old_start) {
if (!VirtualAlloc((void*)aligned_new_start, aligned_old_start - aligned_new_start, MEM_COMMIT, PAGE_READWRITE))
@@ -316,24 +389,22 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_u8 *SLJIT_FUNC sljit_stack_resize(struct sljit_st
return NULL;
}
}
-#else
+#elif defined(MADV_DONTNEED)
if (stack->start < new_start) {
- aligned_new_start = (sljit_uw)new_start & ~sljit_page_align;
- aligned_old_start = ((sljit_uw)stack->start) & ~sljit_page_align;
+ page_align = get_page_alignment();
+
+ aligned_new_start = (sljit_uw)new_start & ~page_align;
+ aligned_old_start = ((sljit_uw)stack->start) & ~page_align;
/* If madvise is available, we release the unnecessary space. */
-#if defined(MADV_DONTNEED) && !defined(__rtems__)
if (aligned_new_start > aligned_old_start)
madvise((void*)aligned_old_start, aligned_new_start - aligned_old_start, MADV_DONTNEED);
-#elif defined(POSIX_MADV_DONTNEED)
- if (aligned_new_start > aligned_old_start)
- posix_madvise((void*)aligned_old_start, aligned_new_start - aligned_old_start, POSIX_MADV_DONTNEED);
-#endif
}
-#endif
+#endif /* _WIN32 */
+
stack->start = new_start;
return new_start;
}
-#endif /* SLJIT_UTIL_STACK */
+#endif /* SLJIT_UTIL_SIMPLE_STACK_ALLOCATION */
-#endif
+#endif /* SLJIT_UTIL_STACK */
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 03:21:22 +0000