1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2019 Intel Corporation
10 #include <rte_debug.h>
12 #include <eal_memcfg.h>
13 #include <rte_errno.h>
14 #include <rte_lcore.h>
15 #include <eal_thread.h>
16 #include <eal_internal_cfg.h>
17 #include <eal_filesystem.h>
18 #include <eal_options.h>
19 #include <eal_private.h>
21 #include "eal_windows.h"
23 /* Allow the application to print its usage message too if set */
24 static rte_usage_hook_t rte_application_usage_hook
;
26 /* define fd variable here, because file needs to be kept open for the
27 * duration of the program, as we hold a write lock on it in the primary proc
29 static int mem_cfg_fd
= -1;
31 /* early configuration structure, when memory config is not mmapped */
32 static struct rte_mem_config early_mem_config
;
34 /* Address of global and public configuration */
35 static struct rte_config rte_config
= {
36 .mem_config
= &early_mem_config
,
39 /* internal configuration (per-core) */
40 struct lcore_config lcore_config
[RTE_MAX_LCORE
];
42 /* internal configuration */
43 struct internal_config internal_config
;
45 /* platform-specific runtime dir */
46 static char runtime_dir
[PATH_MAX
];
49 rte_eal_get_runtime_dir(void)
54 /* Return a pointer to the configuration structure */
56 rte_eal_get_configuration(void)
61 /* Detect if we are a primary or a secondary process */
63 eal_proc_type_detect(void)
65 enum rte_proc_type_t ptype
= RTE_PROC_PRIMARY
;
66 const char *pathname
= eal_runtime_config_path();
68 /* if we can open the file but not get a write-lock we are a secondary
69 * process. NOTE: if we get a file handle back, we keep that open
70 * and don't close it to prevent a race condition between multiple opens
72 errno_t err
= _sopen_s(&mem_cfg_fd
, pathname
,
73 _O_RDWR
, _SH_DENYNO
, _S_IREAD
| _S_IWRITE
);
75 OVERLAPPED soverlapped
= { 0 };
76 soverlapped
.Offset
= sizeof(*rte_config
.mem_config
);
77 soverlapped
.OffsetHigh
= 0;
79 HANDLE hwinfilehandle
= (HANDLE
)_get_osfhandle(mem_cfg_fd
);
81 if (!LockFileEx(hwinfilehandle
,
82 LOCKFILE_EXCLUSIVE_LOCK
| LOCKFILE_FAIL_IMMEDIATELY
, 0,
83 sizeof(*rte_config
.mem_config
), 0, &soverlapped
))
84 ptype
= RTE_PROC_SECONDARY
;
87 RTE_LOG(INFO
, EAL
, "Auto-detected process type: %s\n",
88 ptype
== RTE_PROC_PRIMARY
? "PRIMARY" : "SECONDARY");
95 eal_usage(const char *prgname
)
97 printf("\nUsage: %s ", prgname
);
99 /* Allow the application to print its usage message too
102 if (rte_application_usage_hook
) {
103 printf("===== Application Usage =====\n\n");
104 rte_application_usage_hook(prgname
);
108 /* Parse the arguments for --log-level only */
110 eal_log_level_parse(int argc
, char **argv
)
118 eal_reset_internal_config(&internal_config
);
120 while ((opt
= getopt_long(argc
, argvopt
, eal_short_options
,
121 eal_long_options
, &option_index
)) != EOF
) {
125 /* getopt is not happy, stop right now */
129 ret
= (opt
== OPT_LOG_LEVEL_NUM
) ?
130 eal_parse_common_option(opt
, optarg
,
131 &internal_config
) : 0;
133 /* common parser is not happy */
138 optind
= 0; /* reset getopt lib */
141 /* Parse the argument given in the command line of the application */
142 __attribute__((optnone
)) static int
143 eal_parse_args(int argc
, char **argv
)
148 char *prgname
= argv
[0];
152 while ((opt
= getopt_long(argc
, argvopt
, eal_short_options
,
153 eal_long_options
, &option_index
)) != EOF
) {
157 /* getopt is not happy, stop right now */
163 ret
= eal_parse_common_option(opt
, optarg
, &internal_config
);
164 /* common parser is not happy */
169 /* common parser handled this option */
178 if (opt
< OPT_LONG_MIN_NUM
&& isprint(opt
)) {
179 RTE_LOG(ERR
, EAL
, "Option %c is not supported "
180 "on Windows\n", opt
);
181 } else if (opt
>= OPT_LONG_MIN_NUM
&&
182 opt
< OPT_LONG_MAX_NUM
) {
183 RTE_LOG(ERR
, EAL
, "Option %s is not supported "
185 eal_long_options
[option_index
].name
);
187 RTE_LOG(ERR
, EAL
, "Option %d is not supported "
188 "on Windows\n", opt
);
195 if (eal_adjust_config(&internal_config
) != 0)
199 if (eal_check_common_options(&internal_config
) != 0) {
205 argv
[optind
- 1] = prgname
;
207 optind
= 0; /* reset getopt lib */
212 sync_func(void *arg __rte_unused
)
218 rte_eal_init_alert(const char *msg
)
220 fprintf(stderr
, "EAL: FATAL: %s\n", msg
);
221 RTE_LOG(ERR
, EAL
, "%s\n", msg
);
224 /* Launch threads, called at application init(). */
226 rte_eal_init(int argc
, char **argv
)
230 rte_eal_log_init(NULL
, 0);
232 eal_log_level_parse(argc
, argv
);
234 /* create a map of all processors in the system */
235 eal_create_cpu_map();
237 if (rte_eal_cpu_init() < 0) {
238 rte_eal_init_alert("Cannot detect lcores.");
243 fctret
= eal_parse_args(argc
, argv
);
247 eal_thread_init_master(rte_config
.master_lcore
);
249 RTE_LCORE_FOREACH_SLAVE(i
) {
252 * create communication pipes between master thread
255 if (_pipe(lcore_config
[i
].pipe_master2slave
,
256 sizeof(char), _O_BINARY
) < 0)
257 rte_panic("Cannot create pipe\n");
258 if (_pipe(lcore_config
[i
].pipe_slave2master
,
259 sizeof(char), _O_BINARY
) < 0)
260 rte_panic("Cannot create pipe\n");
262 lcore_config
[i
].state
= WAIT
;
264 /* create a thread for each lcore */
265 if (eal_thread_create(&lcore_config
[i
].thread_id
) != 0)
266 rte_panic("Cannot create thread\n");
270 * Launch a dummy function on all slave lcores, so that master lcore
271 * knows they are all ready when this function returns.
273 rte_eal_mp_remote_launch(sync_func
, NULL
, SKIP_MASTER
);
274 rte_eal_mp_wait_lcore();