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| 1 | +/* Copyright libuv project contributors. All rights reserved. |
| 2 | + * |
| 3 | + * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 4 | + * of this software and associated documentation files (the "Software"), to |
| 5 | + * deal in the Software without restriction, including without limitation the |
| 6 | + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| 7 | + * sell copies of the Software, and to permit persons to whom the Software is |
| 8 | + * furnished to do so, subject to the following conditions: |
| 9 | + * |
| 10 | + * The above copyright notice and this permission notice shall be included in |
| 11 | + * all copies or substantial portions of the Software. |
| 12 | + * |
| 13 | + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 14 | + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 15 | + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 16 | + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 17 | + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 18 | + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| 19 | + * IN THE SOFTWARE. |
| 20 | + */ |
| 21 | + |
| 22 | +#define _GNU_SOURCE 1 |
| 23 | + |
| 24 | +#include "uv.h" |
| 25 | +#include "internal.h" |
| 26 | + |
| 27 | +#include <hurd.h> |
| 28 | +#include <hurd/process.h> |
| 29 | +#include <mach/task_info.h> |
| 30 | +#include <mach/vm_statistics.h> |
| 31 | +#include <mach/vm_param.h> |
| 32 | + |
| 33 | +#include <inttypes.h> |
| 34 | +#include <stddef.h> |
| 35 | +#include <unistd.h> |
| 36 | +#include <string.h> |
| 37 | +#include <limits.h> |
| 38 | + |
| 39 | +int uv_exepath(char* buffer, size_t* size) { |
| 40 | + kern_return_t err; |
| 41 | + /* XXX in current Hurd, strings are char arrays of 1024 elements */ |
| 42 | + string_t exepath; |
| 43 | + ssize_t copied; |
| 44 | + |
| 45 | + if (buffer == NULL || size == NULL || *size == 0) |
| 46 | + return UV_EINVAL; |
| 47 | + |
| 48 | + if (*size - 1 > 0) { |
| 49 | + /* XXX limited length of buffer in current Hurd, this API will probably |
| 50 | + * evolve in the future */ |
| 51 | + err = proc_get_exe(getproc(), getpid(), exepath); |
| 52 | + |
| 53 | + if (err) |
| 54 | + return UV__ERR(err); |
| 55 | + } |
| 56 | + |
| 57 | + copied = uv__strscpy(buffer, exepath, *size); |
| 58 | + |
| 59 | + /* do not return error on UV_E2BIG failure */ |
| 60 | + *size = copied < 0 ? strlen(buffer) : (size_t) copied; |
| 61 | + |
| 62 | + return 0; |
| 63 | +} |
| 64 | + |
| 65 | +int uv_resident_set_memory(size_t* rss) { |
| 66 | + kern_return_t err; |
| 67 | + struct task_basic_info bi; |
| 68 | + mach_msg_type_number_t count; |
| 69 | + |
| 70 | + count = TASK_BASIC_INFO_COUNT; |
| 71 | + err = task_info(mach_task_self(), TASK_BASIC_INFO, |
| 72 | + (task_info_t) &bi, &count); |
| 73 | + |
| 74 | + if (err) |
| 75 | + return UV__ERR(err); |
| 76 | + |
| 77 | + *rss = bi.resident_size; |
| 78 | + |
| 79 | + return 0; |
| 80 | +} |
| 81 | + |
| 82 | +uint64_t uv_get_free_memory(void) { |
| 83 | + kern_return_t err; |
| 84 | + struct vm_statistics vmstats; |
| 85 | + |
| 86 | + err = vm_statistics(mach_task_self(), &vmstats); |
| 87 | + |
| 88 | + if (err) |
| 89 | + return 0; |
| 90 | + |
| 91 | + return vmstats.free_count * vm_page_size; |
| 92 | +} |
| 93 | + |
| 94 | + |
| 95 | +uint64_t uv_get_total_memory(void) { |
| 96 | + kern_return_t err; |
| 97 | + host_basic_info_data_t hbi; |
| 98 | + mach_msg_type_number_t cnt; |
| 99 | + |
| 100 | + cnt = HOST_BASIC_INFO_COUNT; |
| 101 | + err = host_info(mach_host_self(), HOST_BASIC_INFO, (host_info_t) &hbi, &cnt); |
| 102 | + |
| 103 | + if (err) |
| 104 | + return 0; |
| 105 | + |
| 106 | + return hbi.memory_size; |
| 107 | +} |
| 108 | + |
| 109 | + |
| 110 | +int uv_uptime(double* uptime) { |
| 111 | + char buf[128]; |
| 112 | + |
| 113 | + /* Try /proc/uptime first */ |
| 114 | + if (0 == uv__slurp("/proc/uptime", buf, sizeof(buf))) |
| 115 | + if (1 == sscanf(buf, "%lf", uptime)) |
| 116 | + return 0; |
| 117 | + |
| 118 | + /* Reimplement here code from procfs to calculate uptime if not mounted? */ |
| 119 | + |
| 120 | + return UV__ERR(EIO); |
| 121 | +} |
| 122 | + |
| 123 | +void uv_loadavg(double avg[3]) { |
| 124 | + char buf[128]; /* Large enough to hold all of /proc/loadavg. */ |
| 125 | + |
| 126 | + if (0 == uv__slurp("/proc/loadavg", buf, sizeof(buf))) |
| 127 | + if (3 == sscanf(buf, "%lf %lf %lf", &avg[0], &avg[1], &avg[2])) |
| 128 | + return; |
| 129 | + |
| 130 | + /* Reimplement here code from procfs to calculate loadavg if not mounted? */ |
| 131 | +} |
| 132 | + |
| 133 | + |
| 134 | +int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count) { |
| 135 | + kern_return_t err; |
| 136 | + host_basic_info_data_t hbi; |
| 137 | + mach_msg_type_number_t cnt; |
| 138 | + |
| 139 | + /* Get count of cpus */ |
| 140 | + cnt = HOST_BASIC_INFO_COUNT; |
| 141 | + err = host_info(mach_host_self(), HOST_BASIC_INFO, (host_info_t) &hbi, &cnt); |
| 142 | + |
| 143 | + if (err) { |
| 144 | + err = UV__ERR(err); |
| 145 | + goto abort; |
| 146 | + } |
| 147 | + |
| 148 | + /* XXX not implemented on the Hurd */ |
| 149 | + *cpu_infos = uv__calloc(hbi.avail_cpus, sizeof(**cpu_infos)); |
| 150 | + if (*cpu_infos == NULL) { |
| 151 | + err = UV_ENOMEM; |
| 152 | + goto abort; |
| 153 | + } |
| 154 | + |
| 155 | + *count = hbi.avail_cpus; |
| 156 | + |
| 157 | + return 0; |
| 158 | + |
| 159 | + abort: |
| 160 | + *cpu_infos = NULL; |
| 161 | + *count = 0; |
| 162 | + return err; |
| 163 | +} |
| 164 | + |
| 165 | +uint64_t uv_get_constrained_memory(void) { |
| 166 | + return 0; /* Memory constraints are unknown. */ |
| 167 | +} |
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