Drop weird macro and use memcpy/memset instead.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit 60ef8289ae01945f48aefd2e03cf1abead4d177d)

3 files changed, 9 insertions, 107 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9682c43a9..882414e72 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -417,7 +417,6 @@ 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 )
@@ -444,7 +443,6 @@ 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 )
 
diff --git a/config.h.cmake b/config.h.cmake
index ccec3aeb4..426a6879a 100644
--- a/config.h.cmake
+++ b/config.h.cmake
@@ -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
 
@@ -368,9 +365,6 @@
 /* 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
 
diff --git a/kdecore/malloc/malloc.c b/kdecore/malloc/malloc.c
index dba0fdef0..761667049 100644
--- a/kdecore/malloc/malloc.c
+++ b/kdecore/malloc/malloc.c
@@ -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 */