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* Do not adjust to the pagesize at runtime. Besides for the one-timeMarcel Moolenaar2003-11-281-8/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | initialization overhead, there's a problem in that we never call imalloc() and thus malloc_init() for zero-sized allocations. As a result, malloc(0) returns NULL when it's the first or only malloc in the program. Any non-zero allocation will initialize the malloc code with the side-effect that subsequent zero-sized allocations return a non-NULL pointer. This is because the pointer we return for zero- sized allocations is calculated from malloc_pageshift, which needs to be initialized at runtime on ia64. The result of the inconsistent behaviour described above is that configure scripts failed the test for a GNU compatible malloc. This resulted in a lot of broken ports. Other, even simpler, solutions were possible as well: 1. initialize malloc_pageshift with some non-zero value (say 13 for 8KB pages) and keep the runtime adjustment. 2. Stop using malloc_pageshift to calculate ZEROSIZEPTR. Removal of the runtime adjustment was chosen because then ia64 is the same as any other platform. It is not to say that using a page size obtained at runtime is bad per se. It's that there's currently a high level of gratuity for its existence and the moment it causes problems is the moment you need to get rid of it. Hence, it's not unthinkable that this commit is (partially) reverted some time in the future when we do have a good reason for it and a good way to achieve it. Approved by: re@ (rwatson) Reported by: kris (portmgr@) -- may the ports be with you Notes: svn path=/head/; revision=123031
* Externalize malloc's spinlock so that a thread library can takeDaniel Eischen2003-11-041-0/+1
| | | | | | | | | | | | | | it around an application's fork() call. Our new thread libraries (libthr, libpthread) can now have threads running while another thread calls fork(). In this case, it is possible for malloc to be left in an inconsistent state in the child. Our thread libraries, libpthread in particular, need to use malloc internally after a fork (in the child). Reviewed by: davidxu Notes: svn path=/head/; revision=122069
* Remove incomplete support for running FreeBSD userland on old NetBSD kernelsTim J. Robbins2003-10-291-3/+1
| | | | | | | lacking the issetugid() and utrace() syscalls. Notes: svn path=/head/; revision=121667
* Consistently cast to (u_char *) when filling with junk.Poul-Henning Kamp2003-10-251-3/+3
| | | | Notes: svn path=/head/; revision=121518
* Style changes. Inching closer to convergence with OpenBSD.Poul-Henning Kamp2003-10-251-61/+60
| | | | Notes: svn path=/head/; revision=121500
* More style fixes to improve diffability with OpenBSD.Poul-Henning Kamp2003-09-271-46/+54
| | | | | | | Pull 'A' evilness for realloc(3) from OpenBSD. Notes: svn path=/head/; revision=120524
* Style changes to improve diffability against OpenBSD version.Poul-Henning Kamp2003-09-271-91/+91
| | | | Notes: svn path=/head/; revision=120520
* Minor constification.Poul-Henning Kamp2003-07-291-2/+2
| | | | Notes: svn path=/head/; revision=118153
* Clarify the code a bit.Poul-Henning Kamp2003-06-011-1/+2
| | | | | | | Submitted by: Nadav Eiron <nadav@TheEirons.org> Notes: svn path=/head/; revision=115610
* Tell malloc.c that AMD64 uses the same pagesize as i386.Peter Wemm2003-04-301-0/+4
| | | | Notes: svn path=/head/; revision=114321
* Catch some cases where asking for ridiculously large allocations couldPoul-Henning Kamp2003-01-301-0/+4
| | | | | | | result in a segfault. Instead just return NULL. Notes: svn path=/head/; revision=110103
* For "sensitive" processes, we always set the 'A' flag which causes abort()Poul-Henning Kamp2003-01-231-0/+7
| | | | | | | | | | | | | | | | to be called on first sight of trouble. "sensitive" is somewhat arbitrarily defined as "setuid, setgid, uid == root or gid == wheel". The 'A' option carries no performance penalty. It is not possible to override this setting: fix the program instead. Absentmindedly nodded OK to by: various Notes: svn path=/head/; revision=109754
* s/EDOFUS/EDOOFUS/Poul-Henning Kamp2002-08-211-3/+3
| | | | | | | Persuaded by: Google Notes: svn path=/head/; revision=102229
* Make sure we set errno sensibly in case of failure.Poul-Henning Kamp2002-08-091-0/+7
| | | | | | | Spotted by: ache Notes: svn path=/head/; revision=101568
* Const poison.Poul-Henning Kamp2002-05-301-3/+5
| | | | | | | Partially submitted by: wollman Notes: svn path=/head/; revision=97639
* Avoid casting a different sized integer to a pointer on LP64 systems.Peter Wemm2002-05-101-1/+1
| | | | Notes: svn path=/head/; revision=96350
* Constify _malloc_options.Poul-Henning Kamp2002-04-241-1/+1
| | | | Notes: svn path=/head/; revision=95377
* Do not use __progname directly (except in [gs]etprogname(3)).Mark Murray2002-03-291-4/+2
| | | | | | | | | Also, make an internal _getprogname() that is used only inside libc. For libc, getprogname(3) is a weak symbol in case a function of the same name is defined in userland. Notes: svn path=/head/; revision=93399
* Fix the style of the SCM ID's.David E. O'Brien2002-03-221-2/+3
| | | | | | | I believe have made all of libc .c's as consistent as possible. Notes: svn path=/head/; revision=92986
* Remove __P() usage.David E. O'Brien2002-03-211-1/+1
| | | | Notes: svn path=/head/; revision=92905
* Remove 'register' keyword.David E. O'Brien2002-03-211-1/+1
| | | | Notes: svn path=/head/; revision=92889
* Add ifdefs for sparc64.Jake Burkholder2002-02-231-0/+4
| | | | Notes: svn path=/head/; revision=91161
* If 'VX' is given, realloc(foo,0) will bail, it shouldn't.Poul-Henning Kamp2001-11-171-2/+5
| | | | | | | | PR: 29376 Submitted by: Farooq Mela <fmela0@sm.socccd.cc.ca.us> Notes: svn path=/head/; revision=86488
* Correctly call THREAD_UNLOCK() if the recursive call trap is sprung.Poul-Henning Kamp2001-11-161-0/+2
| | | | | | | Pointed out by: knu Notes: svn path=/head/; revision=86466
* phkmalloc->evilchecks++;Poul-Henning Kamp2001-11-021-3/+13
| | | | | | | | | | | If zero bytes are allocated, return pointer to the middle of page-zero (which is protected) so that the program will crash if it dereferences this illgotten pointer. Inspired & Urged by: Theo de Raadt <deraadt@cvs.openbsd.org> Notes: svn path=/head/; revision=85869
* Port to ia64, taking into account the fact that pagesizes may be variable.Doug Rabson2001-09-071-0/+11
| | | | Notes: svn path=/head/; revision=83202
* Fixed style bugs (dot `.' at the end of error and warning messages).Ruslan Ermilov2001-08-101-22/+22
| | | | | | | Noticed by: bde Notes: svn path=/head/; revision=81447
* Remove a sizeof(void *) == sizeof(int) assumption.Poul-Henning Kamp2001-02-041-7/+7
| | | | | | | Submitted by: Loren James Rittle <rittle@latour.rsch.comm.mot.com> Notes: svn path=/head/; revision=71987
* Remove _THREAD_SAFE and make libc thread-safe by default byDaniel Eischen2001-01-241-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | adding (weak definitions to) stubs for some of the pthread functions. If the threads library is linked in, the real pthread functions will pulled in. Use the following convention for system calls wrapped by the threads library: __sys_foo - actual system call _foo - weak definition to __sys_foo foo - weak definition to __sys_foo Change all libc uses of system calls wrapped by the threads library from foo to _foo. In order to define the prototypes for _foo(), we introduce namespace.h and un-namespace.h (suggested by bde). All files that need to reference these system calls, should include namespace.h before any standard includes, then include un-namespace.h after the standard includes and before any local includes. <db.h> is an exception and shouldn't be included in between namespace.h and un-namespace.h namespace.h will define foo to _foo, and un-namespace.h will undefine foo. Try to eliminate some of the recursive calls to MT-safe functions in libc/stdio in preparation for adding a mutex to FILE. We have recursive mutexes, but would like to avoid using them if possible. Remove uneeded includes of <errno.h> from a few files. Add $FreeBSD$ to a few files in order to pass commitprep. Approved by: -arch Notes: svn path=/head/; revision=71579
* Add `_PATH_DEVZERO'.David E. O'Brien2000-12-091-1/+2
| | | | | | | Use _PATH_* where where possible. Notes: svn path=/head/; revision=69793
* Make it possible to override the function which writes messages toPoul-Henning Kamp2000-11-261-12/+18
| | | | | | | | | | stderr in case of warnings and errors. Rename malloc_options to have a leading underscore, I belive I have been told that is more correct namespace wise. Notes: svn path=/head/; revision=69201
* Oops, un-spam this file - the last commit was an accident.Brian Somers2000-09-201-1/+0
| | | | | | | Pointed out by: phk Notes: svn path=/head/; revision=66105
* Only realloc() environ if we're sure that we know where it came from.Brian Somers2000-09-201-0/+1
| | | | | | | | | The recent problems with sshd were due to sshd reassigning `environ' when setenv() thinks it owns it. setenv() subsequently realloc()s the new version of environ and *boom* Notes: svn path=/head/; revision=66101
* Turn malloc options "AJ" on by default.Poul-Henning Kamp2000-07-091-2/+2
| | | | | | | | | | | These will be turned off again as we approach 5.0-RELEASE. If you benchmark things, make sure to ln -sf j /etc/malloc.conf to see "true" performance. Notes: svn path=/head/; revision=62847
* Add a missing THREAD_UNLOCK() found missing by Valentin NechayevPoul-Henning Kamp2000-04-101-3/+1
| | | | | | | | | | <netch@segfault.kiev.ua> Remove allocation failure check from 'A' option, the 'X' option does this as a standalone check now. Notes: svn path=/head/; revision=59117
* Simplify sytem call renaming. Instead of _foo() <-- _libc_foo <-- foo(),Jason Evans2000-01-271-9/+9
| | | | | | | | | | | | | | | | | | | | just use _foo() <-- foo(). In the case of a libpthread that doesn't do call conversion (such as linuxthreads and our upcoming libpthread), this is adequate. In the case of libc_r, we still need three names, which are now _thread_sys_foo() <-- _foo() <-- foo(). Convert all internal libc usage of: aio_suspend(), close(), fsync(), msync(), nanosleep(), open(), fcntl(), read(), and write() to _foo() instead of foo(). Remove all internal libc usage of: creat(), pause(), sleep(), system(), tcdrain(), wait(), and waitpid(). Make thread cancellation fully POSIX-compliant. Suggested by: deischen Notes: svn path=/head/; revision=56698
* Add three-tier symbol naming in support of POSIX thread cancellationJason Evans2000-01-121-10/+9
| | | | | | | | | points. For library functions, the pattern is __sleep() <-- _libc_sleep() <-- sleep(). The arrows represent weak aliases. For system calls, the pattern is _read() <-- _libc_read() <-- read(). Notes: svn path=/head/; revision=55837
* $Id$ -> $FreeBSD$Peter Wemm1999-08-281-1/+1
| | | | Notes: svn path=/head/; revision=50476
* Back out previous commit after discussing it with Dmitrij Tejblum.Dag-Erling Smørgrav1999-07-071-4/+0
| | | | Notes: svn path=/head/; revision=48672
* Always set errno to ENOMEM when returning 0 from malloc() or realloc().Dag-Erling Smørgrav1999-07-071-1/+5
| | | | | | | Approved by: phk Notes: svn path=/head/; revision=48670
* Disable the "Hint" option in phkmalloc as default. Recent VM systemPoul-Henning Kamp1999-03-281-2/+2
| | | | | | | | | | | | | | | changes have made this too expensive. This gains about 1.25% on worldstone on my SMP machine. Swap-less machines, for instance PicoBSDs, and machines which experience page-out trafic, check with top(1), will probably want to reenable this with: ln -s H /etc/malloc.conf Suggested by: alc (&dyson ?) Notes: svn path=/head/; revision=45091
* Delete the XXX comments that refer to spinlock recursion. The malloc/free/John Birrell1998-09-301-15/+1
| | | | | | | | | | | | realloc functions check for recursion within the malloc code itself. In a thread-safe library, the single spinlock ensures that no two threads go inside the protected code at the same time. The thread implementation is responsible for ensuring that the spinlock does in fact protect malloc. There was a window of opportunity in which this was not the case. I'll fix that with a commit RSN. Notes: svn path=/head/; revision=39802
* Use 8k pagesize on alpha, not 4k.Doug Rabson1998-09-231-1/+5
| | | | Notes: svn path=/head/; revision=39606
* Back out part of previous commit (even though it's technically correct).Alexander Langer1998-09-201-1/+17
| | | | | | | | | | | | | | Our spinlock implementation allows a particular thread to obtain a lock multiple times, but release the lock with a single unlock call. Since we're detecting recursion, we know the lock is already owned by the current thread in a previous call and must not be released in the current call. This is really far too dependent on this particular spinlock implementation, so I've added commented out calls to THREAD_UNLOCK in the appropriate places. We can activate this code when spinlock is taught to count each lock operation. Notes: svn path=/head/; revision=39501
* Correctly back out of free if a recursive call into malloc.c is detected.Alexander Langer1998-09-191-8/+7
| | | | | | | | | Set malloc_func *after* grabbing the thread lock. Noticed by: Simon Coggins <simon@oz.org> Notes: svn path=/head/; revision=39491
* preserve errno across the readlink() calls. There is no value in trashingPeter Wemm1998-06-181-1/+4
| | | | | | | errno during a successful malloc() call. Notes: svn path=/head/; revision=37048
* Add support for thread lock debug. No impact of the malloc code.John Birrell1998-06-091-4/+4
| | | | Notes: svn path=/head/; revision=36804
* Replace the threaded locking with spinlock calls for both threadedJohn Birrell1998-04-291-18/+10
| | | | | | | | | | and non-threaded programs. This makes malloc thread safe for linking with libpthread and kernel threads. Reviewed by: phk Notes: svn path=/head/; revision=35503
* Change in name of the static initializer define.John Birrell1998-04-041-2/+2
| | | | Notes: svn path=/head/; revision=35026
* NetBSD doesn't have a utrace syscall, so don't define that ifJohn Birrell1998-03-091-2/+4
| | | | | | | __NETBSD_SYSCALLS is defined. Notes: svn path=/head/; revision=34382
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