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tdelibs
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Code Issues Releases Wiki Activity

Drop weird macro and use memcpy/memset instead.

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Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
pull/114/head
Michele Calgaro 3 years ago
parent 491e1c72c7
commit 60ef8289ae
Signed by: MicheleC
GPG Key ID: 2A75B7CA8ADED5CF
3 changed files with 9 additions and 107 deletions
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2
CMakeLists.txt
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@ -434,7 +434,6 @@ check_function_exists( sendfile HAVE_SENDFILE )
check_function_exists( rindex HAVE_RINDEX )
check_function_exists( putenv HAVE_PUTENV )
check_function_exists( poll HAVE_POLL )
check_function_exists( memcpy HAVE_MEMCPY )
check_function_exists( madvise HAVE_MADVISE )
check_function_exists( getgroups HAVE_GETGROUPS )
check_function_exists( getcwd HAVE_GETCWD )
@ -461,7 +460,6 @@ if( NOT HAVE_CRYPT )
set( CRYPT_LIBRARIES c )
endif( HAVE_CRYPT_LIBC )
endif( NOT HAVE_CRYPT )
check_function_exists( bcopy HAVE_BCOPY )
check_function_exists( mmap HAVE_MMAP )
check_function_exists( munmap HAVE_MUNMAP )

6
config.h.cmake
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@ -119,9 +119,6 @@
/* Define to 1 if libbfd provides demangle.h header */
#cmakedefine HAVE_DEMANGLE_H 1
/* Define to 1 if you have the `bcopy' function. */
#cmakedefine HAVE_BCOPY 1
/* You _must_ have bool */
#undef HAVE_BOOL
@ -383,9 +380,6 @@
/* Define to 1 if you have the <malloc.h> header file. */
#cmakedefine HAVE_MALLOC_H 1
/* Define to 1 if you have the `memcpy' function. */
#cmakedefine HAVE_MEMCPY 1
/* Define to 1 if you have the <memory.h> header file. */
#cmakedefine HAVE_MEMORY_H 1

108
tdecore/malloc/malloc.c
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@ -16,7 +16,6 @@ int kde_malloc_is_used = 0;
#define USE_MALLOC_LOCK
#define INLINE __inline__
/*#define INLINE*/
#define USE_MEMCPY 0
#define MMAP_CLEARS 1
/*
@ -193,8 +192,6 @@ int kde_malloc_is_used = 0;
__STD_C derived from C compiler defines
WIN32 NOT defined
HAVE_MEMCPY defined
USE_MEMCPY 1 if HAVE_MEMCPY is defined
HAVE_MMAP defined as 1
MMAP_CLEARS 1
HAVE_MREMAP 0 unless linux defined
@ -563,34 +560,6 @@ extern "C" {
#endif /* USE_DL_PREFIX */
/*
HAVE_MEMCPY should be defined if you are not otherwise using
ANSI STD C, but still have memcpy and memset in your C library
and want to use them in calloc and realloc. Otherwise simple
macro versions are defined below.
USE_MEMCPY should be defined as 1 if you actually want to
have memset and memcpy called. People report that the macro
versions are faster than libc versions on some systems.
Even if USE_MEMCPY is set to 1, loops to copy/clear small chunks
(of <= 36 bytes) are manually unrolled in realloc and calloc.
*/
/* If it's available it's defined in config.h. */
/* #define HAVE_MEMCPY */
#ifndef USE_MEMCPY
#ifdef HAVE_MEMCPY
#define USE_MEMCPY 1
#else
#define USE_MEMCPY 0
#endif
#endif
#if (__STD_C || defined(HAVE_MEMCPY))
#ifdef WIN32
/* On Win32 memset and memcpy are already declared in windows.h */
#else
@ -602,7 +571,6 @@ Void_t* memset();
Void_t* memcpy();
#endif
#endif
#endif
/*
MALLOC_FAILURE_ACTION is the action to take before "return 0" when
@ -1747,64 +1715,6 @@ int public_mALLOPt(int p, int v) {
#endif
/* ------------- Optional versions of memcopy ---------------- */
#if USE_MEMCPY
/*
Note: memcpy is ONLY invoked with non-overlapping regions,
so the (usually slower) memmove is not needed.
*/
#define MALLOC_COPY(dest, src, nbytes) memcpy(dest, src, nbytes)
#define MALLOC_ZERO(dest, nbytes) memset(dest, 0, nbytes)
#else /* !USE_MEMCPY */
/* Use Duff's device for good zeroing/copying performance. */
#define MALLOC_ZERO(charp, nbytes) \
do { \
INTERNAL_SIZE_T* mzp = (INTERNAL_SIZE_T*)(charp); \
unsigned long mctmp = (nbytes)/sizeof(INTERNAL_SIZE_T); \
long mcn; \
if (mctmp < 8) mcn = 0; else { mcn = (mctmp-1)/8; mctmp %= 8; } \
switch (mctmp) { \
case 0: for(;;) { *mzp++ = 0; \
case 7: *mzp++ = 0; \
case 6: *mzp++ = 0; \
case 5: *mzp++ = 0; \
case 4: *mzp++ = 0; \
case 3: *mzp++ = 0; \
case 2: *mzp++ = 0; \
case 1: *mzp++ = 0; if(mcn <= 0) break; mcn--; } \
} \
} while(0)
#define MALLOC_COPY(dest,src,nbytes) \
do { \
INTERNAL_SIZE_T* mcsrc = (INTERNAL_SIZE_T*) src; \
INTERNAL_SIZE_T* mcdst = (INTERNAL_SIZE_T*) dest; \
unsigned long mctmp = (nbytes)/sizeof(INTERNAL_SIZE_T); \
long mcn; \
if (mctmp < 8) mcn = 0; else { mcn = (mctmp-1)/8; mctmp %= 8; } \
switch (mctmp) { \
case 0: for(;;) { *mcdst++ = *mcsrc++; \
case 7: *mcdst++ = *mcsrc++; \
case 6: *mcdst++ = *mcsrc++; \
case 5: *mcdst++ = *mcsrc++; \
case 4: *mcdst++ = *mcsrc++; \
case 3: *mcdst++ = *mcsrc++; \
case 2: *mcdst++ = *mcsrc++; \
case 1: *mcdst++ = *mcsrc++; if(mcn <= 0) break; mcn--; } \
} \
} while(0)
#endif
/* ------------------ MMAP support ------------------ */
@ -4006,9 +3916,9 @@ Void_t* rEALLOc(oldmem, bytes) Void_t* oldmem; size_t bytes;
ncopies = copysize / sizeof(INTERNAL_SIZE_T);
assert(ncopies >= 3);
if (ncopies > 9)
MALLOC_COPY(d, s, copysize);
if (ncopies > 9) {
memcpy(d, s, copysize);
}
else {
*(d+0) = *(s+0);
*(d+1) = *(s+1);
@ -4106,7 +4016,7 @@ Void_t* rEALLOc(oldmem, bytes) Void_t* oldmem; size_t bytes;
/* Must alloc, copy, free. */
newmem = mALLOc(nb - MALLOC_ALIGN_MASK);
if (newmem != 0) {
MALLOC_COPY(newmem, oldmem, oldsize - 2*SIZE_SZ);
memcpy(newmem, oldmem, oldsize - 2*SIZE_SZ);
fREe(oldmem);
}
}
@ -4264,9 +4174,9 @@ Void_t* cALLOc(n_elements, elem_size) size_t n_elements; size_t elem_size;
nclears = clearsize / sizeof(INTERNAL_SIZE_T);
assert(nclears >= 3);
if (nclears > 9)
MALLOC_ZERO(d, clearsize);
if (nclears > 9) {
memset(d, 0, clearsize);
}
else {
*(d+0) = 0;
*(d+1) = 0;
@ -4290,7 +4200,7 @@ Void_t* cALLOc(n_elements, elem_size) size_t n_elements; size_t elem_size;
{
d = (INTERNAL_SIZE_T*)mem;
clearsize = chunksize(p) - 2 * SIZE_SZ;
MALLOC_ZERO(d, clearsize);
memset(d, 0, clearsize);
}
#endif
}
@ -4396,7 +4306,7 @@ static Void_t** iALLOc(n_elements, sizes, opts, chunks) size_t n_elements; size_
remainder_size = chunksize(p);
if (opts & 0x2) { /* optionally clear the elements */
MALLOC_ZERO(mem, remainder_size - SIZE_SZ - array_size);
memset(mem, 0, remainder_size - SIZE_SZ - array_size)
}
/* If not provided, allocate the pointer array as final part of chunk */

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