diff options
Diffstat (limited to 'mysys/my_malloc.c')
-rw-r--r-- | mysys/my_malloc.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/mysys/my_malloc.c b/mysys/my_malloc.c new file mode 100644 index 00000000000..6cae6fe3a4d --- /dev/null +++ b/mysys/my_malloc.c @@ -0,0 +1,84 @@ +/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, + MA 02111-1307, USA */ + +#ifdef SAFEMALLOC /* We don't need SAFEMALLOC here */ +#undef SAFEMALLOC +#endif + +#include "mysys_priv.h" +#include "mysys_err.h" +#include <m_string.h> + + /* My memory allocator */ + +gptr my_malloc(unsigned int Size, myf MyFlags) +{ + gptr point; + DBUG_ENTER("my_malloc"); + DBUG_PRINT("my",("Size: %u MyFlags: %d",Size, MyFlags)); + + if (!Size) + Size=1; /* Safety */ + if ((point = malloc(Size)) == NULL) + { + my_errno=errno; + if (MyFlags & MY_FAE) + error_handler_hook=fatal_error_handler_hook; + if (MyFlags & (MY_FAE+MY_WME)) + my_error(EE_OUTOFMEMORY, MYF(ME_BELL+ME_WAITTANG),Size); + if (MyFlags & MY_FAE) + exit(1); + } + else if (MyFlags & MY_ZEROFILL) + bzero(point,Size); + DBUG_PRINT("exit",("ptr: %lx",point)); + DBUG_RETURN(point); +} /* my_malloc */ + + + /* Free memory allocated with my_malloc */ + /*ARGSUSED*/ + +void my_no_flags_free(gptr ptr) +{ + DBUG_ENTER("my_free"); + DBUG_PRINT("my",("ptr: %lx",ptr)); + if (ptr) + free(ptr); + DBUG_VOID_RETURN; +} /* my_free */ + + + /* malloc and copy */ + +gptr my_memdup(const byte *from, uint length, myf MyFlags) +{ + gptr ptr; + if ((ptr=my_malloc(length,MyFlags)) != 0) + memcpy((byte*) ptr, (byte*) from,(size_t) length); + return(ptr); +} + + +my_string my_strdup(const char *from, myf MyFlags) +{ + gptr ptr; + uint length=(uint) strlen(from)+1; + if ((ptr=my_malloc(length,MyFlags)) != 0) + memcpy((byte*) ptr, (byte*) from,(size_t) length); + return((my_string) ptr); +} |