diff options
Diffstat (limited to '')
| -rw-r--r-- | configure.ac | 89 | ||||
| -rw-r--r-- | m4/lc_cpucores.m4 | 57 | ||||
| -rw-r--r-- | m4/lc_physmem.m4 | 74 | ||||
| -rw-r--r-- | src/common/cpucores.h | 52 | ||||
| -rw-r--r-- | src/common/physmem.h | 21 | ||||
| -rw-r--r-- | src/xz/args.c | 4 | ||||
| -rw-r--r-- | src/xz/hardware.c | 50 | ||||
| -rw-r--r-- | src/xz/hardware.h | 11 | ||||
| -rw-r--r-- | src/xz/message.c | 5 | ||||
| -rw-r--r-- | src/xz/process.c | 2 |
10 files changed, 235 insertions, 130 deletions
diff --git a/configure.ac b/configure.ac index b08db799..91e9b493 100644 --- a/configure.ac +++ b/configure.ac @@ -564,93 +564,8 @@ gl_GETOPT # Find the best function to set timestamps. AC_CHECK_FUNCS([futimens futimes futimesat utimes utime], [break]) -# Check how to find out the amount of physical memory in the system. The -# xz command line tool uses this to automatically limit its memory usage. -# - sysconf() gives all the needed info on GNU+Linux and Solaris. -# - BSDs use sysctl(). -AC_MSG_CHECKING([how to detect the amount of physical memory]) -AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ -#include <unistd.h> -int -main() -{ - long i; - i = sysconf(_SC_PAGESIZE); - i = sysconf(_SC_PHYS_PAGES); - return 0; -} -]])], [ - AC_DEFINE([HAVE_PHYSMEM_SYSCONF], [1], - [Define to 1 if the amount of physical memory can be detected - with sysconf(_SC_PAGESIZE) and sysconf(_SC_PHYS_PAGES).]) - AC_MSG_RESULT([sysconf]) -], [ -AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ -#include <sys/types.h> -#ifdef HAVE_SYS_PARAM_H -# include <sys/param.h> -#endif -#include <sys/sysctl.h> -int -main() -{ - int name[2] = { CTL_HW, HW_PHYSMEM }; - unsigned long mem; - size_t mem_ptr_size = sizeof(mem); - sysctl(name, 2, &mem, &mem_ptr_size, NULL, NULL); - return 0; -} -]])], [ - AC_DEFINE([HAVE_PHYSMEM_SYSCTL], [1], - [Define to 1 if the amount of physical memory can be detected - with sysctl().]) - AC_MSG_RESULT([sysctl]) -], [ - AC_MSG_RESULT([unknown]) -])]) - -# Check how to find out the number of available CPU cores in the system. -# sysconf(_SC_NPROCESSORS_ONLN) works on most systems, except that BSDs -# use sysctl(). -AC_MSG_CHECKING([how to detect the number of available CPU cores]) -AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ -#include <unistd.h> -int -main() -{ - long i; - i = sysconf(_SC_NPROCESSORS_ONLN); - return 0; -} -]])], [ - AC_DEFINE([HAVE_NCPU_SYSCONF], [1], - [Define to 1 if the number of available CPU cores can be - detected with sysconf(_SC_NPROCESSORS_ONLN).]) - AC_MSG_RESULT([sysconf]) -], [ -AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ -#include <sys/types.h> -#ifdef HAVE_SYS_PARAM_H -# include <sys/param.h> -#endif -#include <sys/sysctl.h> -int -main() -{ - int name[2] = { CTL_HW, HW_NCPU }; - int cpus; - size_t cpus_size = sizeof(cpus); - sysctl(name, 2, &cpus, &cpus_size, NULL, NULL); - return 0; -} -]])], [ - AC_DEFINE([HAVE_NCPU_SYSCTL], [1], - [Define to 1 if the number of available CPU cores can be - detected with sysctl().]) - AC_MSG_RESULT([sysctl]) -], [ - AC_MSG_RESULT([unknown]) -])]) +lc_PHYSMEM +lc_CPUCORES ############################################################################### diff --git a/m4/lc_cpucores.m4 b/m4/lc_cpucores.m4 new file mode 100644 index 00000000..5e4e02d7 --- /dev/null +++ b/m4/lc_cpucores.m4 @@ -0,0 +1,57 @@ +dnl ########################################################################### +dnl +dnl lc_CPUCORES - Check how to find out the number of online CPU cores +dnl +dnl Check how to find out the number of available CPU cores in the system. +dnl sysconf(_SC_NPROCESSORS_ONLN) works on most systems, except that BSDs +dnl use sysctl(). +dnl +dnl ########################################################################### +dnl +dnl Author: Lasse Collin +dnl +dnl This file has been put into the public domain. +dnl You can do whatever you want with this file. +dnl +dnl ########################################################################### +AC_DEFUN([lc_CPUCORES], [ +AC_MSG_CHECKING([how to detect the number of available CPU cores]) +AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ +#include <unistd.h> +int +main(void) +{ + long i; + i = sysconf(_SC_NPROCESSORS_ONLN); + return 0; +} +]])], [ + AC_DEFINE([HAVE_NCPU_SYSCONF], [1], + [Define to 1 if the number of available CPU cores can be + detected with sysconf(_SC_NPROCESSORS_ONLN).]) + AC_MSG_RESULT([sysconf]) +], [ +AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ +#include <sys/types.h> +#ifdef HAVE_SYS_PARAM_H +# include <sys/param.h> +#endif +#include <sys/sysctl.h> +int +main(void) +{ + int name[2] = { CTL_HW, HW_NCPU }; + int cpus; + size_t cpus_size = sizeof(cpus); + sysctl(name, 2, &cpus, &cpus_size, NULL, NULL); + return 0; +} +]])], [ + AC_DEFINE([HAVE_NCPU_SYSCTL], [1], + [Define to 1 if the number of available CPU cores can be + detected with sysctl().]) + AC_MSG_RESULT([sysctl]) +], [ + AC_MSG_RESULT([unknown]) +])]) +])dnl lc_CPUCORES diff --git a/m4/lc_physmem.m4 b/m4/lc_physmem.m4 new file mode 100644 index 00000000..8633f4a1 --- /dev/null +++ b/m4/lc_physmem.m4 @@ -0,0 +1,74 @@ +dnl ########################################################################### +dnl +dnl lc_PHYSMEM - Check how to find out the amount of physical memory +dnl +dnl - sysconf() gives all the needed info on GNU+Linux and Solaris. +dnl - BSDs use sysctl(). +dnl - sysinfo() works on Linux/dietlibc and probably on other Linux systems +dnl whose libc may lack sysconf(). +dnl +dnl ########################################################################### +dnl +dnl Author: Lasse Collin +dnl +dnl This file has been put into the public domain. +dnl You can do whatever you want with this file. +dnl +dnl ########################################################################### +AC_DEFUN([lc_PHYSMEM], [ +AC_MSG_CHECKING([how to detect the amount of physical memory]) +AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ +#include <unistd.h> +int +main(void) +{ + long i; + i = sysconf(_SC_PAGESIZE); + i = sysconf(_SC_PHYS_PAGES); + return 0; +} +]])], [ + AC_DEFINE([HAVE_PHYSMEM_SYSCONF], [1], + [Define to 1 if the amount of physical memory can be detected + with sysconf(_SC_PAGESIZE) and sysconf(_SC_PHYS_PAGES).]) + AC_MSG_RESULT([sysconf]) +], [ +AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ +#include <sys/types.h> +#ifdef HAVE_SYS_PARAM_H +# include <sys/param.h> +#endif +#include <sys/sysctl.h> +int +main(void) +{ + int name[2] = { CTL_HW, HW_PHYSMEM }; + unsigned long mem; + size_t mem_ptr_size = sizeof(mem); + sysctl(name, 2, &mem, &mem_ptr_size, NULL, NULL); + return 0; +} +]])], [ + AC_DEFINE([HAVE_PHYSMEM_SYSCTL], [1], + [Define to 1 if the amount of physical memory can be detected + with sysctl().]) + AC_MSG_RESULT([sysctl]) +], [ +AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ +#include <sys/sysinfo.h> +int +main(void) +{ + struct sysinfo si; + sysinfo(&si); + return 0; +} +]])], [ + AC_DEFINE([HAVE_PHYSMEM_SYSINFO], [1], + [Define to 1 if the amount of physical memory can be detected + with sysinfo().]) + AC_MSG_RESULT([sysinfo]) +], [ + AC_MSG_RESULT([unknown]) +])])]) +])dnl lc_PHYSMEM diff --git a/src/common/cpucores.h b/src/common/cpucores.h new file mode 100644 index 00000000..7e1a1438 --- /dev/null +++ b/src/common/cpucores.h @@ -0,0 +1,52 @@ +/////////////////////////////////////////////////////////////////////////////// +// +/// \file cpucores.h +/// \brief Get the number of online CPU cores +// +// This code has been put into the public domain. +// +// 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. +// +/////////////////////////////////////////////////////////////////////////////// + +#ifndef CPUCORES_H +#define CPUCORES_H + +#if defined(HAVE_NCPU_SYSCONF) +# include <unistd.h> + +#elif defined(HAVE_NCPU_SYSCTL) +# ifdef HAVE_SYS_PARAM_H +# include <sys/param.h> +# endif +# ifdef HAVE_SYS_SYSCTL_H +# include <sys/sysctl.h> +# endif +#endif + + +static inline uint32_t +cpucores(void) +{ + uint32_t ret = 0; + +#if defined(HAVE_CPUCORES_SYSCONF) + const long cpus = sysconf(_SC_NPROCESSORS_ONLN); + if (cpus > 0) + ret = (uint32_t)(cpus); + +#elif defined(HAVE_CPUCORES_SYSCTL) + int name[2] = { CTL_HW, HW_NCPU }; + int cpus; + size_t cpus_size = sizeof(cpus); + if (!sysctl(name, &cpus, &cpus_size, NULL, NULL) + && cpus_size == sizeof(cpus) && cpus > 0) + ret = (uint32_t)(cpus); +#endif + + return ret; +} + +#endif diff --git a/src/common/physmem.h b/src/common/physmem.h index fb17eac5..7075bc56 100644 --- a/src/common/physmem.h +++ b/src/common/physmem.h @@ -14,27 +14,27 @@ #ifndef PHYSMEM_H #define PHYSMEM_H -#if defined(HAVE_PHYSMEM_SYSCTL) || defined(HAVE_NCPU_SYSCTL) +#if defined(HAVE_PHYSMEM_SYSCONF) +# include <unistd.h> + +#elif defined(HAVE_PHYSMEM_SYSCTL) # ifdef HAVE_SYS_PARAM_H # include <sys/param.h> # endif # ifdef HAVE_SYS_SYSCTL_H # include <sys/sysctl.h> # endif -#endif -#if defined(HAVE_PHYSMEM_SYSCONF) || defined(HAVE_NCPU_SYSCONF) -# include <unistd.h> -#endif +#elif defined(HAVE_PHYSMEM_SYSINFO) +# include <sys/sysinfo.h> -#ifdef _WIN32 +#elif defined(_WIN32) # ifndef _WIN32_WINNT # define _WIN32_WINNT 0x0500 # endif # include <windows.h> -#endif -#ifdef __DJGPP__ +#elif defined(__DJGPP__) # include <dpmi.h> #endif @@ -75,6 +75,11 @@ physmem(void) ret = mem.ui; } +#elif defined(HAVE_PHYSMEM_SYSINFO) + struct sysinfo si; + if (sysinfo(&si) == 0) + ret = (uint64_t)(si.totalram) * si.mem_unit; + #elif defined(_WIN32) MEMORYSTATUSEX meminfo; meminfo.dwLength = sizeof(meminfo); diff --git a/src/xz/args.c b/src/xz/args.c index 29abf971..f8732000 100644 --- a/src/xz/args.c +++ b/src/xz/args.c @@ -135,8 +135,8 @@ parse_real(args_info *args, int argc, char **argv) break; case 'T': - opt_threads = str_to_uint64("threads", optarg, - 1, SIZE_MAX); + hardware_threadlimit_set(str_to_uint64( + "threads", optarg, 1, SIZE_MAX)); break; // --version diff --git a/src/xz/hardware.c b/src/xz/hardware.c index 0c372726..0695ccb1 100644 --- a/src/xz/hardware.c +++ b/src/xz/hardware.c @@ -19,11 +19,12 @@ #include "private.h" #include "physmem.h" +#include "cpucores.h" /// Maximum number of free *coder* threads. This can be set with /// the --threads=NUM command line option. -size_t opt_threads = 1; +static uint32_t threads_max; /// Memory usage limit for encoding @@ -40,38 +41,31 @@ static uint64_t memlimit_custom = 0; /// Get the number of CPU cores, and set opt_threads to default to that value. /// User can then override this with --threads command line option. static void -hardware_cores(void) +hardware_threadlimit_init(void) { -#if defined(HAVE_NUM_PROCESSORS_SYSCONF) - const long cpus = sysconf(_SC_NPROCESSORS_ONLN); - if (cpus > 0) - opt_threads = (size_t)(cpus); - -#elif defined(HAVE_NUM_PROCESSORS_SYSCTL) - int name[2] = { CTL_HW, HW_NCPU }; - int cpus; - size_t cpus_size = sizeof(cpus); - if (!sysctl(name, &cpus, &cpus_size, NULL, NULL) - && cpus_size == sizeof(cpus) && cpus > 0) - opt_threads = (size_t)(cpus); -#endif - - // Limit opt_threads so that maximum number of threads doesn't exceed. - -#if defined(_SC_THREAD_THREADS_MAX) - const long threads_max = sysconf(_SC_THREAD_THREADS_MAX); - if (threads_max > 0 && (size_t)(threads_max) < opt_threads) - opt_threads = (size_t)(threads_max); - -#elif defined(PTHREAD_THREADS_MAX) - if (opt_threads > PTHREAD_THREADS_MAX) - opt_threads = PTHREAD_THREADS_MAX; -#endif + threads_max = cpucores(); + if (threads_max == 0) + threads_max = 1; return; } +extern void +hardware_threadlimit_set(uint32_t threadlimit) +{ + threads_max = threadlimit; + return; +} + + +extern uint32_t +hardware_threadlimit_get(void) +{ + return threads_max; +} + + static void hardware_memlimit_init(void) { @@ -117,6 +111,6 @@ extern void hardware_init(void) { hardware_memlimit_init(); - hardware_cores(); + hardware_threadlimit_init(); return; } diff --git a/src/xz/hardware.h b/src/xz/hardware.h index a6d91d78..36761fd1 100644 --- a/src/xz/hardware.h +++ b/src/xz/hardware.h @@ -17,14 +17,19 @@ // /////////////////////////////////////////////////////////////////////////////// -extern size_t opt_threads; - - /// Initialize some hardware-specific variables, which are needed by other /// hardware_* functions. extern void hardware_init(void); +/// Set custom value for maximum number of coder threads. +extern void hardware_threadlimit_set(uint32_t threadlimit); + +/// Get the maximum number of coder threads. Some additional helper threads +/// are allowed on top of this). +extern uint32_t hardware_threadlimit_get(void); + + /// Set custom memory usage limit. This is used for both encoding and /// decoding. Zero indicates resetting the limit back to defaults. extern void hardware_memlimit_set(uint64_t memlimit); diff --git a/src/xz/message.c b/src/xz/message.c index fd519c8f..544572b8 100644 --- a/src/xz/message.c +++ b/src/xz/message.c @@ -1029,8 +1029,9 @@ message_help(bool long_help) hardware_memlimit_encoder() / (1024 * 1024), hardware_memlimit_decoder() / (1024 * 1024)); printf(N_(" * one thread for (de)compression.\n\n", - " * %'" PRIu64 " threads for (de)compression.\n\n", - (uint64_t)(opt_threads)), (uint64_t)(opt_threads)); + " * %'" PRIu32 " threads for (de)compression.\n\n", + hardware_threadlimit_get()), + hardware_threadlimit_get()); } printf(_("Report bugs to <%s> (in English or Finnish).\n"), diff --git a/src/xz/process.c b/src/xz/process.c index 9b966546..efe363ce 100644 --- a/src/xz/process.c +++ b/src/xz/process.c @@ -246,6 +246,7 @@ coder_set_compression_settings(void) memory_limit >> 20); } +/* // Limit the number of worker threads so that memory usage // limit isn't exceeded. assert(memory_usage > 0); @@ -255,6 +256,7 @@ coder_set_compression_settings(void) if (opt_threads > thread_limit) opt_threads = thread_limit; +*/ return; } |