diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/generic')
| -rw-r--r-- | libpthread/nptl/sysdeps/generic/dl-minimal.c | 129 | ||||
| -rw-r--r-- | libpthread/nptl/sysdeps/generic/hp-timing.h | 83 | ||||
| -rw-r--r-- | libpthread/nptl/sysdeps/generic/pt-raise.c | 30 |
3 files changed, 113 insertions, 129 deletions
diff --git a/libpthread/nptl/sysdeps/generic/dl-minimal.c b/libpthread/nptl/sysdeps/generic/dl-minimal.c deleted file mode 100644 index 02968a91c..000000000 --- a/libpthread/nptl/sysdeps/generic/dl-minimal.c +++ /dev/null @@ -1,129 +0,0 @@ -/* Minimal replacements for basic facilities used in the dynamic linker. - Copyright (C) 1995-1998,2000-2002,2004 Free Software Foundation, Inc. - This file is part of the GNU C Library. - - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. - - The GNU C 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 - Lesser General Public License for more details. - - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ - -//#include <errno.h> -#include <limits.h> -#include <string.h> -#include <tls.h> -//#include <unistd.h> -#include <sys/param.h> -#include <sys/types.h> -#include <ldsodefs.h> - -/* Minimal `malloc' allocator for use while loading shared libraries. - No block is ever freed. */ - -static void *alloc_ptr, *alloc_end, *alloc_last_block; - -/* Declarations of global functions. */ -extern void weak_function free (void *ptr); -extern void * weak_function realloc (void *ptr, size_t n); - -/* Allocate an aligned memory block. */ -void * weak_function -memalign (size_t align, size_t n) -{ -#ifdef MAP_ANON -#define _dl_zerofd (-1) -#else - extern int _dl_zerofd; - - if (_dl_zerofd == -1) - _dl_zerofd = _dl_sysdep_open_zero_fill (); -#define MAP_ANON 0 -#endif - - if (alloc_end == 0) - { - /* Consume any unused space in the last page of our data segment. */ - extern int _end attribute_hidden; - alloc_ptr = &_end; - alloc_end = (void *) 0 + (((alloc_ptr - (void *) 0) - + GLRO(dl_pagesize) - 1) - & ~(GLRO(dl_pagesize) - 1)); - } - - /* Make sure the allocation pointer is ideally aligned. */ - alloc_ptr = (void *) 0 + (((alloc_ptr - (void *) 0) + align - 1) - & ~(align - 1)); - - if (alloc_ptr + n >= alloc_end) - { - /* Insufficient space left; allocate another page. */ - caddr_t page; - size_t nup = (n + GLRO(dl_pagesize) - 1) & ~(GLRO(dl_pagesize) - 1); - page = _dl_mmap (0, nup, PROT_READ|PROT_WRITE, - MAP_ANON|MAP_PRIVATE, _dl_zerofd, 0); - if (_dl_mmap_check_error(page)) - return -1; - if (page != alloc_end) - alloc_ptr = page; - alloc_end = page + nup; - } - - alloc_last_block = (void *) alloc_ptr; - alloc_ptr += n; - return alloc_last_block; -} - -void * weak_function -malloc (size_t n) -{ - return memalign (sizeof (double), n); -} - -/* We use this function occasionally since the real implementation may - be optimized when it can assume the memory it returns already is - set to NUL. */ -void * weak_function -calloc (size_t nmemb, size_t size) -{ - /* New memory from the trivial malloc above is always already cleared. - (We make sure that's true in the rare occasion it might not be, - by clearing memory in free, below.) */ - return malloc (nmemb * size); -} - -/* This will rarely be called. */ -void weak_function -free (void *ptr) -{ - /* We can free only the last block allocated. */ - if (ptr == alloc_last_block) - { - /* Since this is rare, we clear the freed block here - so that calloc can presume malloc returns cleared memory. */ - _dl_memset (alloc_last_block, '\0', alloc_ptr - alloc_last_block); - alloc_ptr = alloc_last_block; - } -} - -/* This is only called with the most recent block returned by malloc. */ -void * weak_function -realloc (void *ptr, size_t n) -{ - void *new; - if (ptr == NULL) - return malloc (n); - assert (ptr == alloc_last_block); - alloc_ptr = alloc_last_block; - new = malloc (n); - assert (new == ptr); - return new; -} diff --git a/libpthread/nptl/sysdeps/generic/hp-timing.h b/libpthread/nptl/sysdeps/generic/hp-timing.h new file mode 100644 index 000000000..099342db8 --- /dev/null +++ b/libpthread/nptl/sysdeps/generic/hp-timing.h @@ -0,0 +1,83 @@ +/* High precision, low overhead timing functions. Generic version. + Copyright (C) 1998, 2000 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _HP_TIMING_H +#define _HP_TIMING_H 1 + + +/* There are no generic definitions for the times. We could write something + using the `gettimeofday' system call where available but the overhead of + the system call might be too high. + + In case a platform supports timers in the hardware the following macros + and types must be defined: + + - HP_TIMING_AVAIL: test for availability. + + - HP_TIMING_INLINE: this macro is non-zero if the functionality is not + implemented using function calls but instead uses some inlined code + which might simply consist of a few assembler instructions. We have to + know this since we might want to use the macros here in places where we + cannot make function calls. + + - hp_timing_t: This is the type for variables used to store the time + values. + + - HP_TIMING_ZERO: clear `hp_timing_t' object. + + - HP_TIMING_NOW: place timestamp for current time in variable given as + parameter. + + - HP_TIMING_DIFF_INIT: do whatever is necessary to be able to use the + HP_TIMING_DIFF macro. + + - HP_TIMING_DIFF: compute difference between two times and store it + in a third. Source and destination might overlap. + + - HP_TIMING_ACCUM: add time difference to another variable. This might + be a bit more complicated to implement for some platforms as the + operation should be thread-safe and 64bit arithmetic on 32bit platforms + is not. + + - HP_TIMING_ACCUM_NT: this is the variant for situations where we know + there are no threads involved. + + - HP_TIMING_PRINT: write decimal representation of the timing value into + the given string. This operation need not be inline even though + HP_TIMING_INLINE is specified. + +*/ + +/* Provide dummy definitions. */ +#define HP_TIMING_AVAIL (0) +#define HP_TIMING_INLINE (0) +typedef int hp_timing_t; +#define HP_TIMING_ZERO(Var) +#define HP_TIMING_NOW(var) +#define HP_TIMING_DIFF_INIT() +#define HP_TIMING_DIFF(Diff, Start, End) +#define HP_TIMING_ACCUM(Sum, Diff) +#define HP_TIMING_ACCUM_NT(Sum, Diff) +#define HP_TIMING_PRINT(Buf, Len, Val) + +/* Since this implementation is not available we tell the user about it. */ +#define HP_TIMING_NONAVAIL 1 + +#endif /* hp-timing.h */ diff --git a/libpthread/nptl/sysdeps/generic/pt-raise.c b/libpthread/nptl/sysdeps/generic/pt-raise.c new file mode 100644 index 000000000..59d9590e6 --- /dev/null +++ b/libpthread/nptl/sysdeps/generic/pt-raise.c @@ -0,0 +1,30 @@ +/* Copyright (C) 2002 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include <pthread.h> +#include <signal.h> + + +int +raise (sig) + int sig; +{ + /* This is what POSIX says must happen. */ + return pthread_kill (pthread_self (), sig); +} |