man-pages/man3/malloc_trim.3

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'\" t
.\" Copyright (c) 2012 by Michael Kerrisk <mtk.manpages@gmail.com>
.\"
intro.1, _exit.2, access.2, alarm.2, alloc_hugepages.2, arch_prctl.2, bind.2, chdir.2, chmod.2, chown.2, chroot.2, clock_getres.2, clock_nanosleep.2, close.2, connect.2, delete_module.2, dup.2, execve.2, exit_group.2, faccessat.2, fchmodat.2, fchownat.2, fcntl.2, fork.2, fstatat.2, fsync.2, futimesat.2, get_robust_list.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getpagesize.2, getpid.2, getresuid.2, getrlimit.2, getrusage.2, gettid.2, gettimeofday.2, getuid.2, getunwind.2, idle.2, init_module.2, intro.2, iopl.2, kcmp.2, kexec_load.2, kill.2, link.2, linkat.2, llseek.2, lookup_dcookie.2, madvise.2, mincore.2, mkdirat.2, mknodat.2, mmap.2, mmap2.2, mount.2, mprotect.2, mq_getsetattr.2, msgctl.2, msgget.2, msgop.2, msync.2, nice.2, open.2, openat.2, pause.2, perfmonctl.2, personality.2, pipe.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, quotactl.2, read.2, readahead.2, readdir.2, readlinkat.2, readv.2, reboot.2, recvmmsg.2, remap_file_pages.2, rename.2, renameat.2, rmdir.2, rt_sigqueueinfo.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, sendmmsg.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setresuid.2, setuid.2, setup.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, signal.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, splice.2, stat.2, statfs.2, stime.2, subpage_prot.2, swapon.2, symlink.2, symlinkat.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysfs.2, syslog.2, tee.2, time.2, timer_create.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, times.2, tkill.2, umask.2, umount.2, uname.2, unlink.2, unlinkat.2, uselib.2, ustat.2, utime.2, utimensat.2, vfork.2, vhangup.2, vm86.2, vmsplice.2, wait.2, wait4.2, write.2, CPU_SET.3, INFINITY.3, abort.3, abs.3, acos.3, acosh.3, adjtime.3, aio_init.3, asin.3, asinh.3, asprintf.3, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atexit.3, atof.3, atoi.3, basename.3, bcmp.3, bcopy.3, bindresvport.3, bsd_signal.3, bsearch.3, bstring.3, byteorder.3, bzero.3, catgets.3, catopen.3, cbrt.3, ceil.3, clearenv.3, clock.3, clock_getcpuclockid.3, closedir.3, confstr.3, copysign.3, cos.3, cosh.3, ctermid.3, ctime.3, difftime.3, dirfd.3, div.3, dl_iterate_phdr.3, dprintf.3, drand48.3, drand48_r.3, dysize.3, ecvt.3, ecvt_r.3, end.3, endian.3, erf.3, erfc.3, ether_aton.3, euidaccess.3, exit.3, exp.3, exp10.3, exp2.3, expm1.3, fabs.3, fcloseall.3, fexecve.3, ffs.3, fgetgrent.3, fgetpwent.3, finite.3, flockfile.3, floor.3, fmod.3, fnmatch.3, fopencookie.3, fpathconf.3, fpurge.3, frexp.3, fseeko.3, ftok.3, futimes.3, gcvt.3, get_nprocs_conf.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcontext.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getenv.3, getfsent.3, getgrent.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getifaddrs.3, getipnodebyname.3, getline.3, getlogin.3, getmntent.3, getnetent.3, getnetent_r.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwnam.3, getrpcent_r.3, gets.3, getservent.3, getservent_r.3, getumask.3, getusershell.3, getutmp.3, getw.3, glob.3, gnu_get_libc_version.3, gsignal.3, hypot.3, if_nameindex.3, if_nametoindex.3, ilogb.3, index.3, inet.3, inet_ntop.3, inet_pton.3, infnan.3, initgroups.3, insque.3, intro.3, isalpha.3, isatty.3, j0.3, ldexp.3, localeconv.3, log.3, log10.3, log1p.3, log2.3, logb.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, makedev.3, mallinfo.3, malloc.3, malloc_get_state.3, malloc_info.3, malloc_stats.3, malloc_trim.3, malloc_usable_size.3, mallopt.3, matherr.3, mcheck.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, memfrob.3, memmem.3, memmove.3, memset.3, mkdtemp.3, mkfifo.3, mkfifoat.3, mkstemp.3, mktemp.3, modf.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_open.3, mq_receive.3, mq_send.3, mq_unlink.3, mtrace.3, on_exit.3, opendir.3, posix_fallocate.3, posix_memalign.3, posix_openpt.3, pow.3, pow10.3, profil.3, psignal.3, pthread_attr_init.3, pthread_attr_setaffinity_np.3, pthread_attr_setdetachstate.3, pthread_attr_setguardsize.3, pthread_attr_setinheritsched.3, pthread_attr_setschedparam.3, pthread_attr_setschedpolicy.3, pthread_attr_setscope.3, pthread_attr_setstack.3, pthread_attr_setstackaddr.3, pthread_attr_setstacksize.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_detach.3, pthread_equal.3, pthread_exit.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_join.3, pthread_kill.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_setschedprio.3, pthread_sigmask.3, pthread_sigqueue.3, pthread_testcancel.3, pthread_tryjoin_np.3, pthread_yield.3, putenv.3, putpwent.3, puts.3, qecvt.3, qsort.3, raise.3, rand.3, random.3, random_r.3, re_comp.3, readdir.3, realpath.3, regex.3, remainder.3, remove.3, resolver.3, rewinddir.3, rint.3, round.3, scalb.3, scalbln.3, scandir.3, sched_getcpu.3, seekdir.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_post.3, sem_unlink.3, sem_wait.3, setenv.3, setlocale.3, setlogmask.3, shm_open.3, siginterrupt.3, sigpause.3, sigqueue.3, sigset.3, sigsetops.3, sigvec.3, sigwait.3, sin.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdio_ext.3, stpcpy.3, strcasecmp.3, strcat.3, strchr.3, strcmp.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfry.3, strftime.3, string.3, strlen.3, strpbrk.3, strptime.3, strsep.3, strsignal.3, strspn.3, strstr.3, strtok.3, strtol.3, strtoul.3, strverscmp.3, strxfrm.3, swab.3, sysconf.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, tcgetpgrp.3, tcgetsid.3, telldir.3, tempnam.3, timegm.3, timeradd.3, tmpfile.3, tmpnam.3, toascii.3, toupper.3, trunc.3, tsearch.3, ttyslot.3, tzset.3, ulimit.3, undocumented.3, unlocked_stdio.3, usleep.3, y0.3, cpuid.4, full.4, initrd.4, mouse.4, msr.4, sd.4, st.4, acct.5, core.5, services.5, slabinfo.5, aio.7, capabilities.7, credentials.7, feature_test_macros.7, hier.7, inotify.7, libc.7, locale.7, man-pages.7, man.7, math_error.7, mq_overview.7, numa.7, path_resolution.7, pipe.7, pthreads.7, pty.7, rtld-audit.7, sem_overview.7, shm_overview.7, sigevent.7, signal.7, suffixes.7, svipc.7, termio.7, time.7, udplite.7, units.7, uri.7, sln.8: s/LICENSE_START(verbatim)/LICENSE_START(VERBATIM)/ Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-10 09:29:01 +00:00
.\" %%%LICENSE_START(VERBATIM)
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
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.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
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.\" manual page may be incorrect or out-of-date. The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein. The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
intro.1, _exit.2, access.2, alarm.2, alloc_hugepages.2, arch_prctl.2, bind.2, chdir.2, chmod.2, chown.2, chroot.2, clock_getres.2, clock_nanosleep.2, close.2, connect.2, delete_module.2, dup.2, execve.2, exit_group.2, faccessat.2, fchmodat.2, fchownat.2, fcntl.2, fork.2, fstatat.2, fsync.2, futimesat.2, get_robust_list.2, getdents.2, getdomainname.2, getgid.2, getgroups.2, gethostname.2, getpagesize.2, getpid.2, getresuid.2, getrlimit.2, getrusage.2, gettid.2, gettimeofday.2, getuid.2, getunwind.2, idle.2, init_module.2, intro.2, iopl.2, kcmp.2, kexec_load.2, kill.2, link.2, linkat.2, llseek.2, lookup_dcookie.2, madvise.2, mincore.2, mkdirat.2, mknodat.2, mmap.2, mmap2.2, mount.2, mprotect.2, mq_getsetattr.2, msgctl.2, msgget.2, msgop.2, msync.2, nice.2, open.2, openat.2, pause.2, perfmonctl.2, personality.2, pipe.2, poll.2, posix_fadvise.2, prctl.2, pread.2, process_vm_readv.2, quotactl.2, read.2, readahead.2, readdir.2, readlinkat.2, readv.2, reboot.2, recvmmsg.2, remap_file_pages.2, rename.2, renameat.2, rmdir.2, rt_sigqueueinfo.2, select.2, select_tut.2, semctl.2, semget.2, semop.2, sendmmsg.2, set_tid_address.2, seteuid.2, setfsgid.2, setfsuid.2, setgid.2, setresuid.2, setuid.2, setup.2, sgetmask.2, shmctl.2, shmget.2, shmop.2, sigaction.2, sigaltstack.2, signal.2, sigpending.2, sigprocmask.2, sigreturn.2, sigsuspend.2, sigwaitinfo.2, splice.2, stat.2, statfs.2, stime.2, subpage_prot.2, swapon.2, symlink.2, symlinkat.2, sync.2, sync_file_range.2, syscalls.2, sysctl.2, sysfs.2, syslog.2, tee.2, time.2, timer_create.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, times.2, tkill.2, umask.2, umount.2, uname.2, unlink.2, unlinkat.2, uselib.2, ustat.2, utime.2, utimensat.2, vfork.2, vhangup.2, vm86.2, vmsplice.2, wait.2, wait4.2, write.2, CPU_SET.3, INFINITY.3, abort.3, abs.3, acos.3, acosh.3, adjtime.3, aio_init.3, asin.3, asinh.3, asprintf.3, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atexit.3, atof.3, atoi.3, basename.3, bcmp.3, bcopy.3, bindresvport.3, bsd_signal.3, bsearch.3, bstring.3, byteorder.3, bzero.3, catgets.3, catopen.3, cbrt.3, ceil.3, clearenv.3, clock.3, clock_getcpuclockid.3, closedir.3, confstr.3, copysign.3, cos.3, cosh.3, ctermid.3, ctime.3, difftime.3, dirfd.3, div.3, dl_iterate_phdr.3, dprintf.3, drand48.3, drand48_r.3, dysize.3, ecvt.3, ecvt_r.3, end.3, endian.3, erf.3, erfc.3, ether_aton.3, euidaccess.3, exit.3, exp.3, exp10.3, exp2.3, expm1.3, fabs.3, fcloseall.3, fexecve.3, ffs.3, fgetgrent.3, fgetpwent.3, finite.3, flockfile.3, floor.3, fmod.3, fnmatch.3, fopencookie.3, fpathconf.3, fpurge.3, frexp.3, fseeko.3, ftok.3, futimes.3, gcvt.3, get_nprocs_conf.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcontext.3, getcwd.3, getdate.3, getdirentries.3, getdtablesize.3, getenv.3, getfsent.3, getgrent.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getifaddrs.3, getipnodebyname.3, getline.3, getlogin.3, getmntent.3, getnetent.3, getnetent_r.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwnam.3, getrpcent_r.3, gets.3, getservent.3, getservent_r.3, getumask.3, getusershell.3, getutmp.3, getw.3, glob.3, gnu_get_libc_version.3, gsignal.3, hypot.3, if_nameindex.3, if_nametoindex.3, ilogb.3, index.3, inet.3, inet_ntop.3, inet_pton.3, infnan.3, initgroups.3, insque.3, intro.3, isalpha.3, isatty.3, j0.3, ldexp.3, localeconv.3, log.3, log10.3, log1p.3, log2.3, logb.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, makedev.3, mallinfo.3, malloc.3, malloc_get_state.3, malloc_info.3, malloc_stats.3, malloc_trim.3, malloc_usable_size.3, mallopt.3, matherr.3, mcheck.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, memfrob.3, memmem.3, memmove.3, memset.3, mkdtemp.3, mkfifo.3, mkfifoat.3, mkstemp.3, mktemp.3, modf.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_open.3, mq_receive.3, mq_send.3, mq_unlink.3, mtrace.3, on_exit.3, opendir.3, posix_fallocate.3, posix_memalign.3, posix_openpt.3, pow.3, pow10.3, profil.3, psignal.3, pthread_attr_init.3, pthread_attr_setaffinity_np.3, pthread_attr_setdetachstate.3, pthread_attr_setguardsize.3, pthread_attr_setinheritsched.3, pthread_attr_setschedparam.3, pthread_attr_setschedpolicy.3, pthread_attr_setscope.3, pthread_attr_setstack.3, pthread_attr_setstackaddr.3, pthread_attr_setstacksize.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_detach.3, pthread_equal.3, pthread_exit.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_join.3, pthread_kill.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_setschedprio.3, pthread_sigmask.3, pthread_sigqueue.3, pthread_testcancel.3, pthread_tryjoin_np.3, pthread_yield.3, putenv.3, putpwent.3, puts.3, qecvt.3, qsort.3, raise.3, rand.3, random.3, random_r.3, re_comp.3, readdir.3, realpath.3, regex.3, remainder.3, remove.3, resolver.3, rewinddir.3, rint.3, round.3, scalb.3, scalbln.3, scandir.3, sched_getcpu.3, seekdir.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_post.3, sem_unlink.3, sem_wait.3, setenv.3, setlocale.3, setlogmask.3, shm_open.3, siginterrupt.3, sigpause.3, sigqueue.3, sigset.3, sigsetops.3, sigvec.3, sigwait.3, sin.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdio_ext.3, stpcpy.3, strcasecmp.3, strcat.3, strchr.3, strcmp.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfry.3, strftime.3, string.3, strlen.3, strpbrk.3, strptime.3, strsep.3, strsignal.3, strspn.3, strstr.3, strtok.3, strtol.3, strtoul.3, strverscmp.3, strxfrm.3, swab.3, sysconf.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, tcgetpgrp.3, tcgetsid.3, telldir.3, tempnam.3, timegm.3, timeradd.3, tmpfile.3, tmpnam.3, toascii.3, toupper.3, trunc.3, tsearch.3, ttyslot.3, tzset.3, ulimit.3, undocumented.3, unlocked_stdio.3, usleep.3, y0.3, cpuid.4, full.4, initrd.4, mouse.4, msr.4, sd.4, st.4, acct.5, core.5, services.5, slabinfo.5, aio.7, capabilities.7, credentials.7, feature_test_macros.7, hier.7, inotify.7, libc.7, locale.7, man-pages.7, man.7, math_error.7, mq_overview.7, numa.7, path_resolution.7, pipe.7, pthreads.7, pty.7, rtld-audit.7, sem_overview.7, shm_overview.7, sigevent.7, signal.7, suffixes.7, svipc.7, termio.7, time.7, udplite.7, units.7, uri.7, sln.8: Global fix: Add LICENSE_START(verbatim) Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2013-03-10 09:28:40 +00:00
.\" %%%LICENSE_END
.\"
.TH MALLOC_TRIM 3 2019-05-09 "Linux" "Linux Programmer's Manual"
.SH NAME
malloc_trim \- release free memory from the heap
.SH SYNOPSIS
.B #include <malloc.h>
_syscall.2, clock_getres.2, clone.2, copy_file_range.2, create_module.2, delete_module.2, fallocate.2, futex.2, get_kernel_syms.2, get_robust_list.2, getcpu.2, getdents.2, gettid.2, gettimeofday.2, getunwind.2, init_module.2, io_cancel.2, io_destroy.2, io_getevents.2, io_setup.2, io_submit.2, ioctl_userfaultfd.2, ioprio_set.2, kcmp.2, kexec_load.2, keyctl.2, link.2, llseek.2, memfd_create.2, mmap.2, mq_getsetattr.2, msgctl.2, msgget.2, open_by_handle_at.2, outb.2, perf_event_open.2, pivot_root.2, process_vm_readv.2, query_module.2, readdir.2, recvmmsg.2, rename.2, request_key.2, restart_syscall.2, rt_sigqueueinfo.2, s390_pci_mmio_write.2, s390_runtime_instr.2, sched_setattr.2, seccomp.2, select.2, select_tut.2, send.2, sendmmsg.2, set_thread_area.2, set_tid_address.2, sgetmask.2, shmop.2, sigaction.2, sigprocmask.2, splice.2, spu_create.2, spu_run.2, statx.2, subpage_prot.2, sync_file_range.2, syscall.2, sysctl.2, sysfs.2, tee.2, timer_create.2, timer_delete.2, timer_getoverrun.2, timer_settime.2, tkill.2, uselib.2, utimensat.2, vmsplice.2, wait.2, aio_init.3, asinh.3, atan2.3, atanh.3, backtrace.3, basename.3, bswap.3, bzero.3, catgets.3, catopen.3, dladdr.3, dlsym.3, endian.3, envz_add.3, erf.3, erfc.3, error.3, ferror.3, ffs.3, fgetc.3, fmemopen.3, fopen.3, fopencookie.3, fseek.3, ftw.3, futimes.3, getdate.3, getenv.3, getline.3, getlogin.3, getrpcent.3, getsubopt.3, getutmp.3, getw.3, gnu_get_libc_version.3, inet_net_pton.3, isalpha.3, lio_listio.3, makedev.3, malloc_get_state.3, malloc_stats.3, malloc_trim.3, malloc_usable_size.3, matherr.3, memchr.3, nextup.3, ntp_gettime.3, posix_madvise.3, program_invocation_name.3, pthread_atfork.3, pthread_attr_setaffinity_np.3, pthread_attr_setdetachstate.3, pthread_attr_setguardsize.3, pthread_attr_setinheritsched.3, pthread_attr_setschedparam.3, pthread_attr_setschedpolicy.3, pthread_attr_setscope.3, pthread_attr_setstack.3, pthread_attr_setstackaddr.3, pthread_attr_setstacksize.3, pthread_cleanup_push_defer_np.3, pthread_detach.3, pthread_equal.3, pthread_exit.3, pthread_join.3, pthread_kill.3, pthread_kill_other_threads_np.3, pthread_rwlockattr_setkind_np.3, pthread_self.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setschedprio.3, pthread_testcancel.3, pthread_tryjoin_np.3, pthread_yield.3, puts.3, random.3, random_r.3, rpc.3, sched_getcpu.3, setnetgrent.3, sigwait.3, stdin.3, strerror.3, strfmon.3, timeradd.3, tmpnam.3, toupper.3, towlower.3, towupper.3, ttyname.3, uselocale.3, xdr.3, dsp56k.4, sigevent.7, vdso.7: ffix Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-15 17:26:11 +00:00
.PP
.BI "int malloc_trim(size_t " pad );
.SH DESCRIPTION
The
.BR malloc_trim ()
function attempts to release free memory from the heap
(by calling
.BR sbrk (2)
or
.BR madvise (2)
with suitable arguments).
CPU_SET.3, INFINITY.3, __ppc_get_timebase.3, __ppc_set_ppr_med.3, __ppc_yield.3, __setfpucw.3, acos.3, acosh.3, adjtime.3, aio_fsync.3, aio_init.3, aio_read.3, aio_return.3, aio_suspend.3, aio_write.3, alloca.3, argz_add.3, asin.3, asinh.3, asprintf.3, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atexit.3, backtrace.3, basename.3, bindresvport.3, bsd_signal.3, bsearch.3, bswap.3, btree.3, byteorder.3, bzero.3, canonicalize_file_name.3, carg.3, cbrt.3, ccos.3, ccosh.3, ceil.3, cexp.3, clearenv.3, clock.3, clog.3, clog10.3, clog2.3, confstr.3, copysign.3, cos.3, cosh.3, crypt.3, csin.3, csinh.3, csqrt.3, ctan.3, ctanh.3, ctime.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlerror.3, dlinfo.3, dlopen.3, dlsym.3, drand48_r.3, duplocale.3, encrypt.3, end.3, endian.3, envz_add.3, erf.3, erfc.3, err.3, errno.3, error.3, euidaccess.3, exec.3, exp.3, exp10.3, exp2.3, expm1.3, fabs.3, fcloseall.3, fdim.3, fenv.3, ferror.3, fexecve.3, fflush.3, ffs.3, fgetc.3, finite.3, floor.3, fma.3, fmax.3, fmemopen.3, fmin.3, fmod.3, fmtmsg.3, fopen.3, fopencookie.3, fpclassify.3, fpurge.3, fputwc.3, fputws.3, frexp.3, fseek.3, fseeko.3, ftime.3, fts.3, ftw.3, futimes.3, gamma.3, gcvt.3, get_nprocs_conf.3, get_phys_pages.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcwd.3, getdate.3, getentropy.3, getenv.3, getfsent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getifaddrs.3, getline.3, getlogin.3, getmntent.3, getnameinfo.3, getnetent.3, getnetent_r.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getrpcent_r.3, getrpcport.3, gets.3, getservent.3, getservent_r.3, getspnam.3, getsubopt.3, getttyent.3, getutent.3, getwchar.3, glob.3, gnu_get_libc_version.3, grantpt.3, gsignal.3, hash.3, hsearch.3, hypot.3, iconv.3, iconv_close.3, iconv_open.3, if_nameindex.3, if_nametoindex.3, ilogb.3, inet.3, inet_net_pton.3, inet_ntop.3, initgroups.3, insque.3, intro.3, isalpha.3, isgreater.3, j0.3, key_setsecret.3, killpg.3, ldexp.3, lgamma.3, lio_listio.3, lockf.3, log.3, log10.3, log1p.3, log2.3, logb.3, login.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, makedev.3, mallinfo.3, malloc_get_state.3, malloc_info.3, malloc_stats.3, malloc_trim.3, malloc_usable_size.3, mallopt.3, matherr.3, mbsnrtowcs.3, mbsrtowcs.3, mcheck.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, mkfifo.3, mkstemp.3, mktemp.3, modf.3, mpool.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, nextafter.3, nextup.3, nl_langinfo.3, ntp_gettime.3, offsetof.3, on_exit.3, open_memstream.3, opendir.3, openpty.3, perror.3, popen.3, posix_fallocate.3, posix_madvise.3, posix_memalign.3, posix_openpt.3, posix_spawn.3, pow.3, printf.3, profil.3, program_invocation_name.3, psignal.3, pthread_atfork.3, pthread_attr_init.3, pthread_attr_setaffinity_np.3, pthread_attr_setdetachstate.3, pthread_attr_setguardsize.3, pthread_attr_setinheritsched.3, pthread_attr_setschedparam.3, pthread_attr_setschedpolicy.3, pthread_attr_setscope.3, pthread_attr_setstack.3, pthread_attr_setstackaddr.3, pthread_attr_setstacksize.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_detach.3, pthread_exit.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_join.3, pthread_kill.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_sigqueue.3, pthread_testcancel.3, pthread_tryjoin_np.3, ptsname.3, putgrent.3, putpwent.3, qsort.3, random.3, random_r.3, rcmd.3, re_comp.3, readdir.3, realpath.3, recno.3, regex.3, remainder.3, remove.3, remquo.3, resolver.3, rexec.3, rint.3, round.3, rpc.3, rpmatch.3, rtime.3, scalb.3, scalbln.3, scandir.3, scanf.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_wait.3, setbuf.3, setenv.3, setlocale.3, setlogmask.3, setnetgrent.3, shm_open.3, signbit.3, significand.3, sigpause.3, sigqueue.3, sigset.3, sigvec.3, sin.3, sincos.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdarg.3, stdin.3, strcasecmp.3, strcat.3, strchr.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfmon.3, strfromd.3, strftime.3, strptime.3, strsignal.3, strstr.3, strtod.3, strtok.3, strtol.3, strtoul.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, telldir.3, tempnam.3, termios.3, tgamma.3, timeradd.3, tmpnam.3, toupper.3, towlower.3, towupper.3, trunc.3, tzset.3, ualarm.3, ulimit.3, undocumented.3, unlocked_stdio.3, updwtmp.3, uselocale.3, usleep.3, wcrtomb.3, wcsdup.3, wcsnrtombs.3, wcsrtombs.3, wcstombs.3, wctob.3, wcwidth.3, wordexp.3, wprintf.3, xcrypt.3, xdr.3, y0.3: Formatting fix: replace blank lines with .PP/.IP Blank lines shouldn't generally appear in *roff source (other than in code examples), since they create large vertical spaces between text blocks. Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 03:13:02 +00:00
.PP
The
.I pad
argument specifies the amount of free space to leave untrimmed
at the top of the heap.
If this argument is 0, only the minimum amount of memory is maintained
at the top of the heap (i.e., one page or less).
A nonzero argument can be used to maintain some trailing space
at the top of the heap in order to allow future allocations
to be made without having to extend the heap with
.BR sbrk (2).
.SH RETURN VALUE
The
.BR malloc_trim ()
function returns 1 if memory was actually released back to the system,
or 0 if it was not possible to release any memory.
.SH ERRORS
No errors are defined.
.\" .SH VERSIONS
.\" Available already in glibc 2.0, possibly earlier
.SH ATTRIBUTES
For an explanation of the terms used in this section, see
.BR attributes (7).
.TS
allbox;
lb lb lb
l l l.
Interface Attribute Value
T{
.BR malloc_trim ()
T} Thread safety MT-Safe
.TE
CPU_SET.3, INFINITY.3, __ppc_get_timebase.3, __ppc_set_ppr_med.3, __ppc_yield.3, __setfpucw.3, acos.3, acosh.3, adjtime.3, aio_fsync.3, aio_init.3, aio_read.3, aio_return.3, aio_suspend.3, aio_write.3, alloca.3, argz_add.3, asin.3, asinh.3, asprintf.3, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atexit.3, backtrace.3, basename.3, bindresvport.3, bsd_signal.3, bsearch.3, bswap.3, btree.3, byteorder.3, bzero.3, canonicalize_file_name.3, carg.3, cbrt.3, ccos.3, ccosh.3, ceil.3, cexp.3, clearenv.3, clock.3, clog.3, clog10.3, clog2.3, confstr.3, copysign.3, cos.3, cosh.3, crypt.3, csin.3, csinh.3, csqrt.3, ctan.3, ctanh.3, ctime.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlerror.3, dlinfo.3, dlopen.3, dlsym.3, drand48_r.3, duplocale.3, encrypt.3, end.3, endian.3, envz_add.3, erf.3, erfc.3, err.3, errno.3, error.3, euidaccess.3, exec.3, exp.3, exp10.3, exp2.3, expm1.3, fabs.3, fcloseall.3, fdim.3, fenv.3, ferror.3, fexecve.3, fflush.3, ffs.3, fgetc.3, finite.3, floor.3, fma.3, fmax.3, fmemopen.3, fmin.3, fmod.3, fmtmsg.3, fopen.3, fopencookie.3, fpclassify.3, fpurge.3, fputwc.3, fputws.3, frexp.3, fseek.3, fseeko.3, ftime.3, fts.3, ftw.3, futimes.3, gamma.3, gcvt.3, get_nprocs_conf.3, get_phys_pages.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcwd.3, getdate.3, getentropy.3, getenv.3, getfsent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getifaddrs.3, getline.3, getlogin.3, getmntent.3, getnameinfo.3, getnetent.3, getnetent_r.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getrpcent_r.3, getrpcport.3, gets.3, getservent.3, getservent_r.3, getspnam.3, getsubopt.3, getttyent.3, getutent.3, getwchar.3, glob.3, gnu_get_libc_version.3, grantpt.3, gsignal.3, hash.3, hsearch.3, hypot.3, iconv.3, iconv_close.3, iconv_open.3, if_nameindex.3, if_nametoindex.3, ilogb.3, inet.3, inet_net_pton.3, inet_ntop.3, initgroups.3, insque.3, intro.3, isalpha.3, isgreater.3, j0.3, key_setsecret.3, killpg.3, ldexp.3, lgamma.3, lio_listio.3, lockf.3, log.3, log10.3, log1p.3, log2.3, logb.3, login.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, makedev.3, mallinfo.3, malloc_get_state.3, malloc_info.3, malloc_stats.3, malloc_trim.3, malloc_usable_size.3, mallopt.3, matherr.3, mbsnrtowcs.3, mbsrtowcs.3, mcheck.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, mkfifo.3, mkstemp.3, mktemp.3, modf.3, mpool.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, nextafter.3, nextup.3, nl_langinfo.3, ntp_gettime.3, offsetof.3, on_exit.3, open_memstream.3, opendir.3, openpty.3, perror.3, popen.3, posix_fallocate.3, posix_madvise.3, posix_memalign.3, posix_openpt.3, posix_spawn.3, pow.3, printf.3, profil.3, program_invocation_name.3, psignal.3, pthread_atfork.3, pthread_attr_init.3, pthread_attr_setaffinity_np.3, pthread_attr_setdetachstate.3, pthread_attr_setguardsize.3, pthread_attr_setinheritsched.3, pthread_attr_setschedparam.3, pthread_attr_setschedpolicy.3, pthread_attr_setscope.3, pthread_attr_setstack.3, pthread_attr_setstackaddr.3, pthread_attr_setstacksize.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_detach.3, pthread_exit.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_join.3, pthread_kill.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_sigqueue.3, pthread_testcancel.3, pthread_tryjoin_np.3, ptsname.3, putgrent.3, putpwent.3, qsort.3, random.3, random_r.3, rcmd.3, re_comp.3, readdir.3, realpath.3, recno.3, regex.3, remainder.3, remove.3, remquo.3, resolver.3, rexec.3, rint.3, round.3, rpc.3, rpmatch.3, rtime.3, scalb.3, scalbln.3, scandir.3, scanf.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_wait.3, setbuf.3, setenv.3, setlocale.3, setlogmask.3, setnetgrent.3, shm_open.3, signbit.3, significand.3, sigpause.3, sigqueue.3, sigset.3, sigvec.3, sin.3, sincos.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdarg.3, stdin.3, strcasecmp.3, strcat.3, strchr.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfmon.3, strfromd.3, strftime.3, strptime.3, strsignal.3, strstr.3, strtod.3, strtok.3, strtol.3, strtoul.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, telldir.3, tempnam.3, termios.3, tgamma.3, timeradd.3, tmpnam.3, toupper.3, towlower.3, towupper.3, trunc.3, tzset.3, ualarm.3, ulimit.3, undocumented.3, unlocked_stdio.3, updwtmp.3, uselocale.3, usleep.3, wcrtomb.3, wcsdup.3, wcsnrtombs.3, wcsrtombs.3, wcstombs.3, wctob.3, wcwidth.3, wordexp.3, wprintf.3, xcrypt.3, xdr.3, y0.3: Formatting fix: replace blank lines with .PP/.IP Blank lines shouldn't generally appear in *roff source (other than in code examples), since they create large vertical spaces between text blocks. Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 03:13:02 +00:00
.sp 1
.SH CONFORMING TO
This function is a GNU extension.
.SH NOTES
This function is automatically called by
.BR free (3)
in certain circumstances; see the discussion of
.B M_TOP_PAD
and
.B M_TRIM_THRESHOLD
in
.BR mallopt (3).
CPU_SET.3, INFINITY.3, __ppc_get_timebase.3, __ppc_set_ppr_med.3, __ppc_yield.3, __setfpucw.3, acos.3, acosh.3, adjtime.3, aio_fsync.3, aio_init.3, aio_read.3, aio_return.3, aio_suspend.3, aio_write.3, alloca.3, argz_add.3, asin.3, asinh.3, asprintf.3, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atexit.3, backtrace.3, basename.3, bindresvport.3, bsd_signal.3, bsearch.3, bswap.3, btree.3, byteorder.3, bzero.3, canonicalize_file_name.3, carg.3, cbrt.3, ccos.3, ccosh.3, ceil.3, cexp.3, clearenv.3, clock.3, clog.3, clog10.3, clog2.3, confstr.3, copysign.3, cos.3, cosh.3, crypt.3, csin.3, csinh.3, csqrt.3, ctan.3, ctanh.3, ctime.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlerror.3, dlinfo.3, dlopen.3, dlsym.3, drand48_r.3, duplocale.3, encrypt.3, end.3, endian.3, envz_add.3, erf.3, erfc.3, err.3, errno.3, error.3, euidaccess.3, exec.3, exp.3, exp10.3, exp2.3, expm1.3, fabs.3, fcloseall.3, fdim.3, fenv.3, ferror.3, fexecve.3, fflush.3, ffs.3, fgetc.3, finite.3, floor.3, fma.3, fmax.3, fmemopen.3, fmin.3, fmod.3, fmtmsg.3, fopen.3, fopencookie.3, fpclassify.3, fpurge.3, fputwc.3, fputws.3, frexp.3, fseek.3, fseeko.3, ftime.3, fts.3, ftw.3, futimes.3, gamma.3, gcvt.3, get_nprocs_conf.3, get_phys_pages.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcwd.3, getdate.3, getentropy.3, getenv.3, getfsent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getifaddrs.3, getline.3, getlogin.3, getmntent.3, getnameinfo.3, getnetent.3, getnetent_r.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getrpcent_r.3, getrpcport.3, gets.3, getservent.3, getservent_r.3, getspnam.3, getsubopt.3, getttyent.3, getutent.3, getwchar.3, glob.3, gnu_get_libc_version.3, grantpt.3, gsignal.3, hash.3, hsearch.3, hypot.3, iconv.3, iconv_close.3, iconv_open.3, if_nameindex.3, if_nametoindex.3, ilogb.3, inet.3, inet_net_pton.3, inet_ntop.3, initgroups.3, insque.3, intro.3, isalpha.3, isgreater.3, j0.3, key_setsecret.3, killpg.3, ldexp.3, lgamma.3, lio_listio.3, lockf.3, log.3, log10.3, log1p.3, log2.3, logb.3, login.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, makedev.3, mallinfo.3, malloc_get_state.3, malloc_info.3, malloc_stats.3, malloc_trim.3, malloc_usable_size.3, mallopt.3, matherr.3, mbsnrtowcs.3, mbsrtowcs.3, mcheck.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, mkfifo.3, mkstemp.3, mktemp.3, modf.3, mpool.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, nextafter.3, nextup.3, nl_langinfo.3, ntp_gettime.3, offsetof.3, on_exit.3, open_memstream.3, opendir.3, openpty.3, perror.3, popen.3, posix_fallocate.3, posix_madvise.3, posix_memalign.3, posix_openpt.3, posix_spawn.3, pow.3, printf.3, profil.3, program_invocation_name.3, psignal.3, pthread_atfork.3, pthread_attr_init.3, pthread_attr_setaffinity_np.3, pthread_attr_setdetachstate.3, pthread_attr_setguardsize.3, pthread_attr_setinheritsched.3, pthread_attr_setschedparam.3, pthread_attr_setschedpolicy.3, pthread_attr_setscope.3, pthread_attr_setstack.3, pthread_attr_setstackaddr.3, pthread_attr_setstacksize.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_detach.3, pthread_exit.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_join.3, pthread_kill.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_sigqueue.3, pthread_testcancel.3, pthread_tryjoin_np.3, ptsname.3, putgrent.3, putpwent.3, qsort.3, random.3, random_r.3, rcmd.3, re_comp.3, readdir.3, realpath.3, recno.3, regex.3, remainder.3, remove.3, remquo.3, resolver.3, rexec.3, rint.3, round.3, rpc.3, rpmatch.3, rtime.3, scalb.3, scalbln.3, scandir.3, scanf.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_wait.3, setbuf.3, setenv.3, setlocale.3, setlogmask.3, setnetgrent.3, shm_open.3, signbit.3, significand.3, sigpause.3, sigqueue.3, sigset.3, sigvec.3, sin.3, sincos.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdarg.3, stdin.3, strcasecmp.3, strcat.3, strchr.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfmon.3, strfromd.3, strftime.3, strptime.3, strsignal.3, strstr.3, strtod.3, strtok.3, strtol.3, strtoul.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, telldir.3, tempnam.3, termios.3, tgamma.3, timeradd.3, tmpnam.3, toupper.3, towlower.3, towupper.3, trunc.3, tzset.3, ualarm.3, ulimit.3, undocumented.3, unlocked_stdio.3, updwtmp.3, uselocale.3, usleep.3, wcrtomb.3, wcsdup.3, wcsnrtombs.3, wcsrtombs.3, wcstombs.3, wctob.3, wcwidth.3, wordexp.3, wprintf.3, xcrypt.3, xdr.3, y0.3: Formatting fix: replace blank lines with .PP/.IP Blank lines shouldn't generally appear in *roff source (other than in code examples), since they create large vertical spaces between text blocks. Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 03:13:02 +00:00
.PP
Only the main heap (using
.BR sbrk (2))
honors the
.I pad
argument; thread heaps do not.
.PP
Since glibc 2.8 this function frees memory in all arenas and in all
chunks with whole free pages.
.\" See commit 68631c8eb92ff38d9da1ae34f6aa048539b199cc
.\" (dated 2007-12-16) which adds iteration over all
.\" arenas and frees all pages in chunks which are free.
CPU_SET.3, INFINITY.3, __ppc_get_timebase.3, __ppc_set_ppr_med.3, __ppc_yield.3, __setfpucw.3, acos.3, acosh.3, adjtime.3, aio_fsync.3, aio_init.3, aio_read.3, aio_return.3, aio_suspend.3, aio_write.3, alloca.3, argz_add.3, asin.3, asinh.3, asprintf.3, assert.3, assert_perror.3, atan.3, atan2.3, atanh.3, atexit.3, backtrace.3, basename.3, bindresvport.3, bsd_signal.3, bsearch.3, bswap.3, btree.3, byteorder.3, bzero.3, canonicalize_file_name.3, carg.3, cbrt.3, ccos.3, ccosh.3, ceil.3, cexp.3, clearenv.3, clock.3, clog.3, clog10.3, clog2.3, confstr.3, copysign.3, cos.3, cosh.3, crypt.3, csin.3, csinh.3, csqrt.3, ctan.3, ctanh.3, ctime.3, dbopen.3, dl_iterate_phdr.3, dladdr.3, dlerror.3, dlinfo.3, dlopen.3, dlsym.3, drand48_r.3, duplocale.3, encrypt.3, end.3, endian.3, envz_add.3, erf.3, erfc.3, err.3, errno.3, error.3, euidaccess.3, exec.3, exp.3, exp10.3, exp2.3, expm1.3, fabs.3, fcloseall.3, fdim.3, fenv.3, ferror.3, fexecve.3, fflush.3, ffs.3, fgetc.3, finite.3, floor.3, fma.3, fmax.3, fmemopen.3, fmin.3, fmod.3, fmtmsg.3, fopen.3, fopencookie.3, fpclassify.3, fpurge.3, fputwc.3, fputws.3, frexp.3, fseek.3, fseeko.3, ftime.3, fts.3, ftw.3, futimes.3, gamma.3, gcvt.3, get_nprocs_conf.3, get_phys_pages.3, getaddrinfo.3, getaddrinfo_a.3, getauxval.3, getcwd.3, getdate.3, getentropy.3, getenv.3, getfsent.3, getgrent_r.3, getgrnam.3, getgrouplist.3, gethostbyname.3, gethostid.3, getifaddrs.3, getline.3, getlogin.3, getmntent.3, getnameinfo.3, getnetent.3, getnetent_r.3, getopt.3, getprotoent.3, getprotoent_r.3, getpw.3, getpwent.3, getpwent_r.3, getpwnam.3, getrpcent.3, getrpcent_r.3, getrpcport.3, gets.3, getservent.3, getservent_r.3, getspnam.3, getsubopt.3, getttyent.3, getutent.3, getwchar.3, glob.3, gnu_get_libc_version.3, grantpt.3, gsignal.3, hash.3, hsearch.3, hypot.3, iconv.3, iconv_close.3, iconv_open.3, if_nameindex.3, if_nametoindex.3, ilogb.3, inet.3, inet_net_pton.3, inet_ntop.3, initgroups.3, insque.3, intro.3, isalpha.3, isgreater.3, j0.3, key_setsecret.3, killpg.3, ldexp.3, lgamma.3, lio_listio.3, lockf.3, log.3, log10.3, log1p.3, log2.3, logb.3, login.3, lrint.3, lround.3, lsearch.3, lseek64.3, makecontext.3, makedev.3, mallinfo.3, malloc_get_state.3, malloc_info.3, malloc_stats.3, malloc_trim.3, malloc_usable_size.3, mallopt.3, matherr.3, mbsnrtowcs.3, mbsrtowcs.3, mcheck.3, memccpy.3, memchr.3, memcmp.3, memcpy.3, mkfifo.3, mkstemp.3, mktemp.3, modf.3, mpool.3, mq_close.3, mq_getattr.3, mq_notify.3, mq_open.3, mq_receive.3, mq_send.3, mtrace.3, newlocale.3, nextafter.3, nextup.3, nl_langinfo.3, ntp_gettime.3, offsetof.3, on_exit.3, open_memstream.3, opendir.3, openpty.3, perror.3, popen.3, posix_fallocate.3, posix_madvise.3, posix_memalign.3, posix_openpt.3, posix_spawn.3, pow.3, printf.3, profil.3, program_invocation_name.3, psignal.3, pthread_atfork.3, pthread_attr_init.3, pthread_attr_setaffinity_np.3, pthread_attr_setdetachstate.3, pthread_attr_setguardsize.3, pthread_attr_setinheritsched.3, pthread_attr_setschedparam.3, pthread_attr_setschedpolicy.3, pthread_attr_setscope.3, pthread_attr_setstack.3, pthread_attr_setstackaddr.3, pthread_attr_setstacksize.3, pthread_cancel.3, pthread_cleanup_push.3, pthread_cleanup_push_defer_np.3, pthread_create.3, pthread_detach.3, pthread_exit.3, pthread_getattr_default_np.3, pthread_getattr_np.3, pthread_getcpuclockid.3, pthread_join.3, pthread_kill.3, pthread_kill_other_threads_np.3, pthread_self.3, pthread_setaffinity_np.3, pthread_setcancelstate.3, pthread_setconcurrency.3, pthread_setname_np.3, pthread_setschedparam.3, pthread_sigmask.3, pthread_sigqueue.3, pthread_testcancel.3, pthread_tryjoin_np.3, ptsname.3, putgrent.3, putpwent.3, qsort.3, random.3, random_r.3, rcmd.3, re_comp.3, readdir.3, realpath.3, recno.3, regex.3, remainder.3, remove.3, remquo.3, resolver.3, rexec.3, rint.3, round.3, rpc.3, rpmatch.3, rtime.3, scalb.3, scalbln.3, scandir.3, scanf.3, sem_close.3, sem_destroy.3, sem_getvalue.3, sem_init.3, sem_open.3, sem_wait.3, setbuf.3, setenv.3, setlocale.3, setlogmask.3, setnetgrent.3, shm_open.3, signbit.3, significand.3, sigpause.3, sigqueue.3, sigset.3, sigvec.3, sin.3, sincos.3, sinh.3, sleep.3, sockatmark.3, sqrt.3, statvfs.3, stdarg.3, stdin.3, strcasecmp.3, strcat.3, strchr.3, strcoll.3, strcpy.3, strdup.3, strerror.3, strfmon.3, strfromd.3, strftime.3, strptime.3, strsignal.3, strstr.3, strtod.3, strtok.3, strtol.3, strtoul.3, syslog.3, system.3, sysv_signal.3, tan.3, tanh.3, telldir.3, tempnam.3, termios.3, tgamma.3, timeradd.3, tmpnam.3, toupper.3, towlower.3, towupper.3, trunc.3, tzset.3, ualarm.3, ulimit.3, undocumented.3, unlocked_stdio.3, updwtmp.3, uselocale.3, usleep.3, wcrtomb.3, wcsdup.3, wcsnrtombs.3, wcsrtombs.3, wcstombs.3, wctob.3, wcwidth.3, wordexp.3, wprintf.3, xcrypt.3, xdr.3, y0.3: Formatting fix: replace blank lines with .PP/.IP Blank lines shouldn't generally appear in *roff source (other than in code examples), since they create large vertical spaces between text blocks. Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2017-08-16 03:13:02 +00:00
.PP
Before glibc 2.8 this function only freed memory at the
top of the heap in the main arena.
.SH SEE ALSO
.BR sbrk (2),
.BR malloc (3),
.BR mallopt (3)