| /* Copyright Joyent, Inc. and other Node contributors. All rights reserved. |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| */ |
| |
| #include "uv.h" |
| #include "internal.h" |
| |
| #include <stdio.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <assert.h> |
| #include <errno.h> |
| |
| #ifndef SUNOS_NO_IFADDRS |
| # include <ifaddrs.h> |
| #endif |
| #include <net/if.h> |
| |
| #include <sys/loadavg.h> |
| #include <sys/time.h> |
| #include <unistd.h> |
| #include <kstat.h> |
| #include <fcntl.h> |
| |
| #include <sys/port.h> |
| #include <port.h> |
| |
| #define PORT_FIRED 0x69 |
| #define PORT_UNUSED 0x0 |
| #define PORT_LOADED 0x99 |
| #define PORT_DELETED -1 |
| |
| #if (!defined(_LP64)) && (_FILE_OFFSET_BITS - 0 == 64) |
| #define PROCFS_FILE_OFFSET_BITS_HACK 1 |
| #undef _FILE_OFFSET_BITS |
| #else |
| #define PROCFS_FILE_OFFSET_BITS_HACK 0 |
| #endif |
| |
| #include <procfs.h> |
| |
| #if (PROCFS_FILE_OFFSET_BITS_HACK - 0 == 1) |
| #define _FILE_OFFSET_BITS 64 |
| #endif |
| |
| |
| int uv__platform_loop_init(uv_loop_t* loop, int default_loop) { |
| loop->fs_fd = -1; |
| loop->backend_fd = port_create(); |
| |
| if (loop->backend_fd == -1) |
| return -1; |
| |
| uv__cloexec(loop->backend_fd, 1); |
| |
| return 0; |
| } |
| |
| |
| void uv__platform_loop_delete(uv_loop_t* loop) { |
| if (loop->fs_fd != -1) { |
| close(loop->fs_fd); |
| loop->fs_fd = -1; |
| } |
| |
| if (loop->backend_fd != -1) { |
| close(loop->backend_fd); |
| loop->backend_fd = -1; |
| } |
| } |
| |
| |
| void uv__platform_invalidate_fd(uv_loop_t* loop, int fd) { |
| struct port_event* events; |
| uintptr_t i; |
| uintptr_t nfds; |
| |
| assert(loop->watchers != NULL); |
| |
| events = (struct port_event*) loop->watchers[loop->nwatchers]; |
| nfds = (uintptr_t) loop->watchers[loop->nwatchers + 1]; |
| if (events == NULL) |
| return; |
| |
| /* Invalidate events with same file descriptor */ |
| for (i = 0; i < nfds; i++) |
| if ((int) events[i].portev_object == fd) |
| events[i].portev_object = -1; |
| } |
| |
| |
| void uv__io_poll(uv_loop_t* loop, int timeout) { |
| struct port_event events[1024]; |
| struct port_event* pe; |
| struct timespec spec; |
| ngx_queue_t* q; |
| uv__io_t* w; |
| uint64_t base; |
| uint64_t diff; |
| unsigned int nfds; |
| unsigned int i; |
| int saved_errno; |
| int nevents; |
| int count; |
| int fd; |
| |
| if (loop->nfds == 0) { |
| assert(ngx_queue_empty(&loop->watcher_queue)); |
| return; |
| } |
| |
| while (!ngx_queue_empty(&loop->watcher_queue)) { |
| q = ngx_queue_head(&loop->watcher_queue); |
| ngx_queue_remove(q); |
| ngx_queue_init(q); |
| |
| w = ngx_queue_data(q, uv__io_t, watcher_queue); |
| assert(w->pevents != 0); |
| |
| if (port_associate(loop->backend_fd, PORT_SOURCE_FD, w->fd, w->pevents, 0)) |
| abort(); |
| |
| w->events = w->pevents; |
| } |
| |
| assert(timeout >= -1); |
| base = loop->time; |
| count = 48; /* Benchmarks suggest this gives the best throughput. */ |
| |
| for (;;) { |
| if (timeout != -1) { |
| spec.tv_sec = timeout / 1000; |
| spec.tv_nsec = (timeout % 1000) * 1000000; |
| } |
| |
| /* Work around a kernel bug where nfds is not updated. */ |
| events[0].portev_source = 0; |
| |
| nfds = 1; |
| saved_errno = 0; |
| if (port_getn(loop->backend_fd, |
| events, |
| ARRAY_SIZE(events), |
| &nfds, |
| timeout == -1 ? NULL : &spec)) { |
| /* Work around another kernel bug: port_getn() may return events even |
| * on error. |
| */ |
| if (errno == EINTR || errno == ETIME) |
| saved_errno = errno; |
| else |
| abort(); |
| } |
| |
| /* Update loop->time unconditionally. It's tempting to skip the update when |
| * timeout == 0 (i.e. non-blocking poll) but there is no guarantee that the |
| * operating system didn't reschedule our process while in the syscall. |
| */ |
| SAVE_ERRNO(uv__update_time(loop)); |
| |
| if (events[0].portev_source == 0) { |
| if (timeout == 0) |
| return; |
| |
| if (timeout == -1) |
| continue; |
| |
| goto update_timeout; |
| } |
| |
| if (nfds == 0) { |
| assert(timeout != -1); |
| return; |
| } |
| |
| nevents = 0; |
| |
| assert(loop->watchers != NULL); |
| loop->watchers[loop->nwatchers] = (void*) events; |
| loop->watchers[loop->nwatchers + 1] = (void*) (uintptr_t) nfds; |
| for (i = 0; i < nfds; i++) { |
| pe = events + i; |
| fd = pe->portev_object; |
| |
| /* Skip invalidated events, see uv__platform_invalidate_fd */ |
| if (fd == -1) |
| continue; |
| |
| assert(fd >= 0); |
| assert((unsigned) fd < loop->nwatchers); |
| |
| w = loop->watchers[fd]; |
| |
| /* File descriptor that we've stopped watching, ignore. */ |
| if (w == NULL) |
| continue; |
| |
| w->cb(loop, w, pe->portev_events); |
| nevents++; |
| |
| /* Events Ports operates in oneshot mode, rearm timer on next run. */ |
| if (w->pevents != 0 && ngx_queue_empty(&w->watcher_queue)) |
| ngx_queue_insert_tail(&loop->watcher_queue, &w->watcher_queue); |
| } |
| loop->watchers[loop->nwatchers] = NULL; |
| loop->watchers[loop->nwatchers + 1] = NULL; |
| |
| if (nevents != 0) { |
| if (nfds == ARRAY_SIZE(events) && --count != 0) { |
| /* Poll for more events but don't block this time. */ |
| timeout = 0; |
| continue; |
| } |
| return; |
| } |
| |
| if (saved_errno == ETIME) { |
| assert(timeout != -1); |
| return; |
| } |
| |
| if (timeout == 0) |
| return; |
| |
| if (timeout == -1) |
| continue; |
| |
| update_timeout: |
| assert(timeout > 0); |
| |
| diff = loop->time - base; |
| if (diff >= (uint64_t) timeout) |
| return; |
| |
| timeout -= diff; |
| } |
| } |
| |
| |
| uint64_t uv__hrtime(void) { |
| return gethrtime(); |
| } |
| |
| |
| /* |
| * We could use a static buffer for the path manipulations that we need outside |
| * of the function, but this function could be called by multiple consumers and |
| * we don't want to potentially create a race condition in the use of snprintf. |
| */ |
| int uv_exepath(char* buffer, size_t* size) { |
| ssize_t res; |
| char buf[128]; |
| |
| if (buffer == NULL) |
| return (-1); |
| |
| if (size == NULL) |
| return (-1); |
| |
| (void) snprintf(buf, sizeof(buf), "/proc/%lu/path/a.out", (unsigned long) getpid()); |
| res = readlink(buf, buffer, *size - 1); |
| |
| if (res < 0) |
| return (res); |
| |
| buffer[res] = '\0'; |
| *size = res; |
| return (0); |
| } |
| |
| |
| uint64_t uv_get_free_memory(void) { |
| return (uint64_t) sysconf(_SC_PAGESIZE) * sysconf(_SC_AVPHYS_PAGES); |
| } |
| |
| |
| uint64_t uv_get_total_memory(void) { |
| return (uint64_t) sysconf(_SC_PAGESIZE) * sysconf(_SC_PHYS_PAGES); |
| } |
| |
| |
| void uv_loadavg(double avg[3]) { |
| (void) getloadavg(avg, 3); |
| } |
| |
| |
| #if defined(PORT_SOURCE_FILE) |
| |
| static void uv__fs_event_rearm(uv_fs_event_t *handle) { |
| if (handle->fd == -1) |
| return; |
| |
| if (port_associate(handle->loop->fs_fd, |
| PORT_SOURCE_FILE, |
| (uintptr_t) &handle->fo, |
| FILE_ATTRIB | FILE_MODIFIED, |
| handle) == -1) { |
| uv__set_sys_error(handle->loop, errno); |
| } |
| handle->fd = PORT_LOADED; |
| } |
| |
| |
| static void uv__fs_event_read(uv_loop_t* loop, |
| uv__io_t* w, |
| unsigned int revents) { |
| uv_fs_event_t *handle = NULL; |
| timespec_t timeout; |
| port_event_t pe; |
| int events; |
| int r; |
| |
| (void) w; |
| (void) revents; |
| |
| do { |
| uint_t n = 1; |
| |
| /* |
| * Note that our use of port_getn() here (and not port_get()) is deliberate: |
| * there is a bug in event ports (Sun bug 6456558) whereby a zeroed timeout |
| * causes port_get() to return success instead of ETIME when there aren't |
| * actually any events (!); by using port_getn() in lieu of port_get(), |
| * we can at least workaround the bug by checking for zero returned events |
| * and treating it as we would ETIME. |
| */ |
| do { |
| memset(&timeout, 0, sizeof timeout); |
| r = port_getn(loop->fs_fd, &pe, 1, &n, &timeout); |
| } |
| while (r == -1 && errno == EINTR); |
| |
| if ((r == -1 && errno == ETIME) || n == 0) |
| break; |
| |
| handle = (uv_fs_event_t *)pe.portev_user; |
| assert((r == 0) && "unexpected port_get() error"); |
| |
| events = 0; |
| if (pe.portev_events & (FILE_ATTRIB | FILE_MODIFIED)) |
| events |= UV_CHANGE; |
| if (pe.portev_events & ~(FILE_ATTRIB | FILE_MODIFIED)) |
| events |= UV_RENAME; |
| assert(events != 0); |
| handle->fd = PORT_FIRED; |
| handle->cb(handle, NULL, events, 0); |
| } |
| while (handle->fd != PORT_DELETED); |
| |
| if (handle != NULL && handle->fd != PORT_DELETED) |
| uv__fs_event_rearm(handle); |
| } |
| |
| |
| int uv_fs_event_init(uv_loop_t* loop, |
| uv_fs_event_t* handle, |
| const char* filename, |
| uv_fs_event_cb cb, |
| int flags) { |
| int portfd; |
| int first_run = 0; |
| |
| if (loop->fs_fd == -1) { |
| if ((portfd = port_create()) == -1) { |
| uv__set_sys_error(loop, errno); |
| return -1; |
| } |
| loop->fs_fd = portfd; |
| first_run = 1; |
| } |
| |
| uv__handle_init(loop, (uv_handle_t*)handle, UV_FS_EVENT); |
| uv__handle_start(handle); /* FIXME shouldn't start automatically */ |
| handle->filename = strdup(filename); |
| handle->fd = PORT_UNUSED; |
| handle->cb = cb; |
| |
| memset(&handle->fo, 0, sizeof handle->fo); |
| handle->fo.fo_name = handle->filename; |
| uv__fs_event_rearm(handle); |
| |
| if (first_run) { |
| uv__io_init(&loop->fs_event_watcher, uv__fs_event_read, portfd); |
| uv__io_start(loop, &loop->fs_event_watcher, UV__POLLIN); |
| } |
| |
| return 0; |
| } |
| |
| |
| void uv__fs_event_close(uv_fs_event_t* handle) { |
| if (handle->fd == PORT_FIRED || handle->fd == PORT_LOADED) { |
| port_dissociate(handle->loop->fs_fd, PORT_SOURCE_FILE, (uintptr_t)&handle->fo); |
| } |
| handle->fd = PORT_DELETED; |
| free(handle->filename); |
| handle->filename = NULL; |
| handle->fo.fo_name = NULL; |
| uv__handle_stop(handle); |
| } |
| |
| #else /* !defined(PORT_SOURCE_FILE) */ |
| |
| int uv_fs_event_init(uv_loop_t* loop, |
| uv_fs_event_t* handle, |
| const char* filename, |
| uv_fs_event_cb cb, |
| int flags) { |
| uv__set_sys_error(loop, ENOSYS); |
| return -1; |
| } |
| |
| |
| void uv__fs_event_close(uv_fs_event_t* handle) { |
| UNREACHABLE(); |
| } |
| |
| #endif /* defined(PORT_SOURCE_FILE) */ |
| |
| |
| char** uv_setup_args(int argc, char** argv) { |
| return argv; |
| } |
| |
| |
| uv_err_t uv_set_process_title(const char* title) { |
| return uv_ok_; |
| } |
| |
| |
| uv_err_t uv_get_process_title(char* buffer, size_t size) { |
| if (size > 0) { |
| buffer[0] = '\0'; |
| } |
| return uv_ok_; |
| } |
| |
| |
| uv_err_t uv_resident_set_memory(size_t* rss) { |
| psinfo_t psinfo; |
| uv_err_t err; |
| int fd; |
| |
| fd = open("/proc/self/psinfo", O_RDONLY); |
| if (fd == -1) |
| return uv__new_sys_error(errno); |
| |
| err = uv_ok_; |
| |
| if (read(fd, &psinfo, sizeof(psinfo)) == sizeof(psinfo)) |
| *rss = (size_t)psinfo.pr_rssize * 1024; |
| else |
| err = uv__new_sys_error(EINVAL); |
| |
| close(fd); |
| |
| return err; |
| } |
| |
| |
| uv_err_t uv_uptime(double* uptime) { |
| kstat_ctl_t *kc; |
| kstat_t *ksp; |
| kstat_named_t *knp; |
| |
| long hz = sysconf(_SC_CLK_TCK); |
| |
| if ((kc = kstat_open()) == NULL) |
| return uv__new_sys_error(errno); |
| |
| ksp = kstat_lookup(kc, (char *)"unix", 0, (char *)"system_misc"); |
| |
| if (kstat_read(kc, ksp, NULL) == -1) { |
| *uptime = -1; |
| } else { |
| knp = (kstat_named_t *) kstat_data_lookup(ksp, (char *)"clk_intr"); |
| *uptime = knp->value.ul / hz; |
| } |
| |
| kstat_close(kc); |
| |
| return uv_ok_; |
| } |
| |
| |
| uv_err_t uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count) { |
| int lookup_instance; |
| kstat_ctl_t *kc; |
| kstat_t *ksp; |
| kstat_named_t *knp; |
| uv_cpu_info_t* cpu_info; |
| |
| if ((kc = kstat_open()) == NULL) { |
| return uv__new_sys_error(errno); |
| } |
| |
| /* Get count of cpus */ |
| lookup_instance = 0; |
| while ((ksp = kstat_lookup(kc, (char *)"cpu_info", lookup_instance, NULL))) { |
| lookup_instance++; |
| } |
| |
| *cpu_infos = (uv_cpu_info_t*) |
| malloc(lookup_instance * sizeof(uv_cpu_info_t)); |
| if (!(*cpu_infos)) { |
| return uv__new_artificial_error(UV_ENOMEM); |
| } |
| |
| *count = lookup_instance; |
| |
| cpu_info = *cpu_infos; |
| lookup_instance = 0; |
| while ((ksp = kstat_lookup(kc, (char *)"cpu_info", lookup_instance, NULL))) { |
| if (kstat_read(kc, ksp, NULL) == -1) { |
| cpu_info->speed = 0; |
| cpu_info->model = NULL; |
| } else { |
| knp = (kstat_named_t *) kstat_data_lookup(ksp, (char *)"clock_MHz"); |
| assert(knp->data_type == KSTAT_DATA_INT32 || |
| knp->data_type == KSTAT_DATA_INT64); |
| cpu_info->speed = (knp->data_type == KSTAT_DATA_INT32) ? knp->value.i32 |
| : knp->value.i64; |
| |
| knp = (kstat_named_t *) kstat_data_lookup(ksp, (char *)"brand"); |
| assert(knp->data_type == KSTAT_DATA_STRING); |
| cpu_info->model = strdup(KSTAT_NAMED_STR_PTR(knp)); |
| } |
| |
| lookup_instance++; |
| cpu_info++; |
| } |
| |
| cpu_info = *cpu_infos; |
| lookup_instance = 0; |
| while ((ksp = kstat_lookup(kc, (char *)"cpu", lookup_instance, (char *)"sys"))){ |
| |
| if (kstat_read(kc, ksp, NULL) == -1) { |
| cpu_info->cpu_times.user = 0; |
| cpu_info->cpu_times.nice = 0; |
| cpu_info->cpu_times.sys = 0; |
| cpu_info->cpu_times.idle = 0; |
| cpu_info->cpu_times.irq = 0; |
| } else { |
| knp = (kstat_named_t *) kstat_data_lookup(ksp, (char *)"cpu_ticks_user"); |
| assert(knp->data_type == KSTAT_DATA_UINT64); |
| cpu_info->cpu_times.user = knp->value.ui64; |
| |
| knp = (kstat_named_t *) kstat_data_lookup(ksp, (char *)"cpu_ticks_kernel"); |
| assert(knp->data_type == KSTAT_DATA_UINT64); |
| cpu_info->cpu_times.sys = knp->value.ui64; |
| |
| knp = (kstat_named_t *) kstat_data_lookup(ksp, (char *)"cpu_ticks_idle"); |
| assert(knp->data_type == KSTAT_DATA_UINT64); |
| cpu_info->cpu_times.idle = knp->value.ui64; |
| |
| knp = (kstat_named_t *) kstat_data_lookup(ksp, (char *)"intr"); |
| assert(knp->data_type == KSTAT_DATA_UINT64); |
| cpu_info->cpu_times.irq = knp->value.ui64; |
| cpu_info->cpu_times.nice = 0; |
| } |
| |
| lookup_instance++; |
| cpu_info++; |
| } |
| |
| kstat_close(kc); |
| |
| return uv_ok_; |
| } |
| |
| |
| void uv_free_cpu_info(uv_cpu_info_t* cpu_infos, int count) { |
| int i; |
| |
| for (i = 0; i < count; i++) { |
| free(cpu_infos[i].model); |
| } |
| |
| free(cpu_infos); |
| } |
| |
| |
| uv_err_t uv_interface_addresses(uv_interface_address_t** addresses, |
| int* count) { |
| #ifdef SUNOS_NO_IFADDRS |
| return uv__new_artificial_error(UV_ENOSYS); |
| #else |
| struct ifaddrs *addrs, *ent; |
| char ip[INET6_ADDRSTRLEN]; |
| uv_interface_address_t* address; |
| |
| if (getifaddrs(&addrs) != 0) { |
| return uv__new_sys_error(errno); |
| } |
| |
| *count = 0; |
| |
| /* Count the number of interfaces */ |
| for (ent = addrs; ent != NULL; ent = ent->ifa_next) { |
| if (!(ent->ifa_flags & IFF_UP && ent->ifa_flags & IFF_RUNNING) || |
| (ent->ifa_addr == NULL) || |
| (ent->ifa_addr->sa_family == PF_PACKET)) { |
| continue; |
| } |
| |
| (*count)++; |
| } |
| |
| *addresses = (uv_interface_address_t*) |
| malloc(*count * sizeof(uv_interface_address_t)); |
| if (!(*addresses)) { |
| return uv__new_artificial_error(UV_ENOMEM); |
| } |
| |
| address = *addresses; |
| |
| for (ent = addrs; ent != NULL; ent = ent->ifa_next) { |
| memset(&ip, 0, sizeof(ip)); |
| |
| if (!(ent->ifa_flags & IFF_UP && ent->ifa_flags & IFF_RUNNING)) { |
| continue; |
| } |
| |
| if (ent->ifa_addr == NULL) { |
| continue; |
| } |
| |
| address->name = strdup(ent->ifa_name); |
| |
| if (ent->ifa_addr->sa_family == AF_INET6) { |
| address->address.address6 = *((struct sockaddr_in6 *)ent->ifa_addr); |
| } else { |
| address->address.address4 = *((struct sockaddr_in *)ent->ifa_addr); |
| } |
| |
| address->is_internal = ent->ifa_flags & IFF_PRIVATE || ent->ifa_flags & |
| IFF_LOOPBACK ? 1 : 0; |
| |
| address++; |
| } |
| |
| freeifaddrs(addrs); |
| |
| return uv_ok_; |
| #endif /* SUNOS_NO_IFADDRS */ |
| } |
| |
| |
| void uv_free_interface_addresses(uv_interface_address_t* addresses, |
| int count) { |
| int i; |
| |
| for (i = 0; i < count; i++) { |
| free(addresses[i].name); |
| } |
| |
| free(addresses); |
| } |