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1 /* Copyright libuv contributors. All rights reserved.
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2 *
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3 * Permission is hereby granted, free of charge, to any person obtaining a copy
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4 * of this software and associated documentation files (the "Software"), to
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5 * deal in the Software without restriction, including without limitation the
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6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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7 * sell copies of the Software, and to permit persons to whom the Software is
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8 * furnished to do so, subject to the following conditions:
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9 *
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10 * The above copyright notice and this permission notice shall be included in
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11 * all copies or substantial portions of the Software.
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12 *
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13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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19 * IN THE SOFTWARE.
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20 */
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21
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22 #include "uv.h"
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23 #include "internal.h"
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24
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25 #include <string.h>
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26 #include <sys/process.h>
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27 #include <sys/neutrino.h>
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28 #include <sys/memmsg.h>
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29 #include <sys/syspage.h>
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30 #include <sys/procfs.h>
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31
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32 static void
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33 get_mem_info(uint64_t* totalmem, uint64_t* freemem) {
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34 mem_info_t msg;
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35
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36 memset(&msg, 0, sizeof(msg));
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37 msg.i.type = _MEM_INFO;
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38 msg.i.fd = -1;
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39
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40 if (MsgSend(MEMMGR_COID, &msg.i, sizeof(msg.i), &msg.o, sizeof(msg.o))
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41 != -1) {
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42 *totalmem = msg.o.info.__posix_tmi_total;
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43 *freemem = msg.o.info.posix_tmi_length;
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44 } else {
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45 *totalmem = 0;
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46 *freemem = 0;
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47 }
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48 }
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49
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50
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51 void uv_loadavg(double avg[3]) {
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52 avg[0] = 0.0;
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53 avg[1] = 0.0;
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54 avg[2] = 0.0;
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55 }
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56
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57
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58 int uv_exepath(char* buffer, size_t* size) {
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59 char path[PATH_MAX];
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60 if (buffer == NULL || size == NULL || *size == 0)
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61 return UV_EINVAL;
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62
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63 realpath(_cmdname(NULL), path);
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64 strlcpy(buffer, path, *size);
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65 *size = strlen(buffer);
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66 return 0;
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67 }
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68
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69
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70 uint64_t uv_get_free_memory(void) {
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71 uint64_t totalmem;
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72 uint64_t freemem;
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73 get_mem_info(&totalmem, &freemem);
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74 return freemem;
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75 }
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76
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77
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78 uint64_t uv_get_total_memory(void) {
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79 uint64_t totalmem;
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80 uint64_t freemem;
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81 get_mem_info(&totalmem, &freemem);
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82 return totalmem;
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83 }
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84
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85
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86 uint64_t uv_get_constrained_memory(void) {
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87 return 0;
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88 }
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89
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90
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91 uint64_t uv_get_available_memory(void) {
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92 return uv_get_free_memory();
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93 }
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94
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95
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96 int uv_resident_set_memory(size_t* rss) {
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97 int fd;
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98 procfs_asinfo asinfo;
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99
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100 fd = uv__open_cloexec("/proc/self/ctl", O_RDONLY);
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101 if (fd == -1)
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102 return UV__ERR(errno);
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103
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104 if (devctl(fd, DCMD_PROC_ASINFO, &asinfo, sizeof(asinfo), 0) == -1) {
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105 uv__close(fd);
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106 return UV__ERR(errno);
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107 }
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108
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109 uv__close(fd);
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110 *rss = asinfo.rss;
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111 return 0;
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112 }
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113
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114
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115 int uv_uptime(double* uptime) {
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116 struct qtime_entry* qtime = _SYSPAGE_ENTRY(_syspage_ptr, qtime);
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117 *uptime = (qtime->nsec / 1000000000.0);
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118 return 0;
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119 }
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120
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121
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122 int uv_cpu_info(uv_cpu_info_t** cpu_infos, int* count) {
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123 struct cpuinfo_entry* cpuinfo =
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124 (struct cpuinfo_entry*)_SYSPAGE_ENTRY(_syspage_ptr, new_cpuinfo);
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125 size_t cpuinfo_size = _SYSPAGE_ELEMENT_SIZE(_syspage_ptr, cpuinfo);
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126 struct strings_entry* strings = _SYSPAGE_ENTRY(_syspage_ptr, strings);
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127 int num_cpus = _syspage_ptr->num_cpu;
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128 int i;
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129
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130 *count = num_cpus;
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131 *cpu_infos = uv__malloc(num_cpus * sizeof(**cpu_infos));
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132 if (*cpu_infos == NULL)
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133 return UV_ENOMEM;
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134
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135 for (i = 0; i < num_cpus; i++) {
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136 (*cpu_infos)[i].model = strdup(&strings->data[cpuinfo->name]);
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137 (*cpu_infos)[i].speed = cpuinfo->speed;
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138 SYSPAGE_ARRAY_ADJ_OFFSET(cpuinfo, cpuinfo, cpuinfo_size);
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139 }
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140
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141 return 0;
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142 }
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