/home/travis/build/MoarVM/MoarVM/src/main.c
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1 | | #include <stdio.h> |
2 | | #include <stdlib.h> |
3 | | #include <string.h> |
4 | | #include <moar.h> |
5 | | |
6 | | #if MVM_TRACING |
7 | | # define TRACING_OPT "[--tracing] " |
8 | | # define TRACING_USAGE "\n --tracing output a line to stderr on every interpreter instr" |
9 | | #else |
10 | | # define TRACING_OPT "" |
11 | | # define TRACING_USAGE "" |
12 | | #endif |
13 | | |
14 | | #ifdef HAVE_TELEMEH |
15 | | # define TELEMEH_USAGE " MVM_TELEMETRY_LOG Log internal events at high precision to this file\n" |
16 | | #else |
17 | | # define TELEMEH_USAGE "" |
18 | | #endif |
19 | | |
20 | | #ifndef _WIN32 |
21 | | # include "signal.h" |
22 | | #endif |
23 | | |
24 | | #ifndef _WIN32 |
25 | | # include <unistd.h> |
26 | | #else |
27 | | # include <process.h> |
28 | | #endif |
29 | | |
30 | | #ifdef _WIN32 |
31 | | # define snprintf _snprintf |
32 | | #endif |
33 | | |
34 | | #if defined(_MSC_VER) |
35 | | #define strtoll _strtoi64 |
36 | | #endif |
37 | | |
38 | | /* flags need to be sorted alphabetically */ |
39 | | |
40 | | enum { |
41 | | NOT_A_FLAG = -2, |
42 | | UNKNOWN_FLAG = -1, |
43 | | |
44 | | FLAG_CRASH, |
45 | | FLAG_SUSPEND, |
46 | | FLAG_DUMP, |
47 | | FLAG_FULL_CLEANUP, |
48 | | FLAG_HELP, |
49 | | FLAG_TRACING, |
50 | | FLAG_VERSION, |
51 | | |
52 | | OPT_EXECNAME, |
53 | | OPT_LIBPATH, |
54 | | OPT_DEBUGPORT |
55 | | }; |
56 | | |
57 | | static const char *const FLAGS[] = { |
58 | | "--crash", |
59 | | "--debug-suspend", |
60 | | "--dump", |
61 | | "--full-cleanup", |
62 | | "--help", |
63 | | "--tracing", |
64 | | "--version", |
65 | | }; |
66 | | |
67 | | static const char USAGE[] = "\ |
68 | | USAGE: moar [--crash] [--libpath=...] " TRACING_OPT "input.moarvm [program args]\n\ |
69 | | moar --dump input.moarvm\n\ |
70 | | moar --help\n\ |
71 | | \n\ |
72 | | --help display this message\n\ |
73 | | --dump dump the bytecode to stdout instead of executing\n\ |
74 | | --full-cleanup try to free all memory and exit cleanly\n\ |
75 | | --crash abort instead of exiting on unhandled exception\n\ |
76 | | --libpath specify path loadbytecode should search in\n\ |
77 | | --version show version information\n\ |
78 | | --debug-port=1234 listen for incoming debugger connections\n\ |
79 | | --debug-suspend pause execution at the entry point" |
80 | | TRACING_USAGE |
81 | | "\n\ |
82 | | \n\ |
83 | | The following environment variables are respected:\n\ |
84 | | \n\ |
85 | | MVM_SPESH_DISABLE Disables all dynamic optimization\n\ |
86 | | MVM_SPESH_INLINE_DISABLE Disables inlining\n\ |
87 | | MVM_SPESH_OSR_DISABLE Disables on-stack replacement\n\ |
88 | | MVM_SPESH_BLOCKING Blocks log-sending thread while specializer runs\n\ |
89 | | MVM_SPESH_LOG Specifies a dynamic optimizer log file\n\ |
90 | | MVM_SPESH_NODELAY Run dynamic optimization even for cold frames\n\ |
91 | | MVM_SPESH_LIMIT Limit the maximum number of specializations\n\ |
92 | | MVM_JIT_DISABLE Disables JITting to machine code\n\ |
93 | | MVM_JIT_EXPR_DISABLE Disable advanced 'expression' JIT\n\ |
94 | | MVM_JIT_LOG Specifies a JIT-compiler log file\n\ |
95 | | MVM_JIT_BYTECODE_DIR Specifies a directory for JIT bytecode dumps\n\ |
96 | | MVM_CROSS_THREAD_WRITE_LOG Log unprotected cross-thread object writes to stderr\n\ |
97 | | MVM_COVERAGE_LOG Append (de-duped by default) line-by-line coverage messages to this file\n\ |
98 | | MVM_COVERAGE_CONTROL If set to 1, non-de-duping coverage started with nqp::coveragecontrol(1),\n\ |
99 | | if set to 2, non-de-duping coverage started right away\n" |
100 | | TELEMEH_USAGE; |
101 | | |
102 | | static int cmp_flag(const void *key, const void *value) |
103 | 0 | { |
104 | 0 | return strcmp(key, *(char **)value); |
105 | 0 | } |
106 | | |
107 | 0 | static int starts_with(const char *str, const char *want) { |
108 | 0 | size_t str_len = strlen(str); |
109 | 0 | size_t want_len = strlen(want); |
110 | 0 | return str_len < want_len |
111 | 0 | ? 0 |
112 | 0 | : strncmp(str, want, want_len) == 0; |
113 | 0 | } |
114 | | |
115 | | static int parse_flag(const char *arg) |
116 | 144 | { |
117 | 144 | const char *const *found; |
118 | 144 | |
119 | 144 | if (!arg || arg[0] != '-') |
120 | 144 | return NOT_A_FLAG; |
121 | 144 | |
122 | 0 | found = bsearch(arg, FLAGS, sizeof FLAGS / sizeof *FLAGS, sizeof *FLAGS, cmp_flag); |
123 | 0 |
|
124 | 0 | if (found) |
125 | 0 | return (int)(found - FLAGS); |
126 | 0 | else if (starts_with(arg, "--libpath=")) |
127 | 0 | return OPT_LIBPATH; |
128 | 0 | else if (starts_with(arg, "--execname=")) |
129 | 0 | return OPT_EXECNAME; |
130 | 0 | else if (starts_with(arg, "--debug-port=")) |
131 | 0 | return OPT_DEBUGPORT; |
132 | 0 | else |
133 | 0 | return UNKNOWN_FLAG; |
134 | 0 | } |
135 | | |
136 | | #ifndef _WIN32 |
137 | | int main(int argc, char *argv[]) |
138 | | #else |
139 | | int wmain(int argc, wchar_t *wargv[]) |
140 | | #endif |
141 | 144 | { |
142 | 144 | MVMInstance *instance; |
143 | 144 | const char *input_file; |
144 | 144 | const char *executable_name = NULL; |
145 | 144 | const char *lib_path[8]; |
146 | 144 | |
147 | 144 | #ifdef _WIN32 |
148 | | char **argv = MVM_UnicodeToUTF8_argv(argc, wargv); |
149 | | #endif |
150 | 144 | |
151 | 144 | int dump = 0; |
152 | 144 | int full_cleanup = 0; |
153 | 144 | int argi = 1; |
154 | 144 | int lib_path_i = 0; |
155 | 144 | int flag; |
156 | 144 | |
157 | 144 | unsigned int interval_id; |
158 | 144 | char telemeh_inited = 0; |
159 | 144 | |
160 | 144 | MVMuint32 debugserverport = 0; |
161 | 144 | int start_suspended = 0; |
162 | 144 | |
163 | 144 | for (; (flag = parse_flag(argv[argi])) != NOT_A_FLAG; ++argi) { |
164 | 0 | switch (flag) { |
165 | 0 | case FLAG_CRASH: |
166 | 0 | MVM_crash_on_error(); |
167 | 0 | continue; |
168 | 0 |
|
169 | 0 | case FLAG_DUMP: |
170 | 0 | dump = 1; |
171 | 0 | continue; |
172 | 0 |
|
173 | 0 | case FLAG_FULL_CLEANUP: |
174 | 0 | full_cleanup = 1; |
175 | 0 | continue; |
176 | 0 |
|
177 | 0 | case FLAG_HELP: |
178 | 0 | puts(USAGE); |
179 | 0 | return EXIT_SUCCESS; |
180 | 0 |
|
181 | 0 | #if MVM_TRACING |
182 | | case FLAG_TRACING: |
183 | | MVM_interp_enable_tracing(); |
184 | | continue; |
185 | | #endif |
186 | 0 |
|
187 | 0 | case FLAG_SUSPEND: |
188 | 0 | start_suspended = 1; |
189 | 0 | continue; |
190 | 0 |
|
191 | 0 | case OPT_EXECNAME: |
192 | 0 | executable_name = argv[argi] + strlen("--execname="); |
193 | 0 | continue; |
194 | 0 |
|
195 | 0 | case OPT_LIBPATH: |
196 | 0 | if (lib_path_i == 7) { /* 0..7 == 8 */ |
197 | 0 | fprintf(stderr, "ERROR: Only up to eight --libpath options are allowed.\n"); |
198 | 0 | return EXIT_FAILURE; |
199 | 0 | } |
200 | 0 |
|
201 | 0 | lib_path[lib_path_i++] = argv[argi] + strlen("--libpath="); |
202 | 0 | continue; |
203 | 0 |
|
204 | 0 | case FLAG_VERSION: { |
205 | 0 | char *spesh_disable; |
206 | 0 | char *jit_disable; |
207 | 0 |
|
208 | 0 | printf("This is MoarVM version %s", MVM_VERSION); |
209 | 0 | if (MVM_jit_support()) { |
210 | 0 | printf(" built with JIT support"); |
211 | 0 |
|
212 | 0 | spesh_disable = getenv("MVM_SPESH_DISABLE"); |
213 | 0 | jit_disable = getenv("MVM_JIT_DISABLE"); |
214 | 0 | if (spesh_disable && strlen(spesh_disable) != 0) { |
215 | 0 | printf(" (disabled via MVM_SPESH_DISABLE)"); |
216 | 0 | } else if (jit_disable && strlen(jit_disable) != 0) { |
217 | 0 | printf(" (disabled via MVM_JIT_DISABLE)"); |
218 | 0 | } |
219 | 0 | } |
220 | 0 | printf("\n"); |
221 | 0 | return EXIT_SUCCESS; |
222 | 0 | } |
223 | 0 |
|
224 | 0 | case OPT_DEBUGPORT: { |
225 | 0 | MVMint64 port; |
226 | 0 | char *portstr = argv[argi] + strlen("--debugport=") + 1; |
227 | 0 | char *endptr; |
228 | 0 | port = strtoll(portstr, &endptr, 10); |
229 | 0 | if (*endptr != '\0') { |
230 | 0 | fprintf(stderr, "ERROR: Invalid characters in debug port flag: %s\n", portstr); |
231 | 0 | return EXIT_FAILURE; |
232 | 0 | } |
233 | 0 | if (port <= 1024 || port > 65535) { |
234 | 0 | fprintf(stderr, "ERROR: debug server port out of range. We only accept ports above 1024 and below 65535. (got: %lu)\n", port); |
235 | 0 | return EXIT_FAILURE; |
236 | 0 | } |
237 | 0 | debugserverport = (MVMuint32)port; |
238 | 0 | break; |
239 | 0 | } |
240 | 0 |
|
241 | 0 | default: |
242 | 0 | fprintf(stderr, "ERROR: Unknown flag %s.\n\n%s\n", argv[argi], USAGE); |
243 | 0 | return EXIT_FAILURE; |
244 | 0 | } |
245 | 0 | } |
246 | 144 | |
247 | 144 | #ifdef HAVE_TELEMEH |
248 | | if (getenv("MVM_TELEMETRY_LOG")) { |
249 | | char path[256]; |
250 | | FILE *fp; |
251 | | snprintf(path, 255, "%s.%d", getenv("MVM_TELEMETRY_LOG"), |
252 | | #ifdef _WIN32 |
253 | | _getpid() |
254 | | #else |
255 | | getpid() |
256 | | #endif |
257 | | ); |
258 | | fp = fopen(path, "w"); |
259 | | if (fp) { |
260 | | MVM_telemetry_init(fp); |
261 | | telemeh_inited = 1; |
262 | | interval_id = MVM_telemetry_interval_start(0, "moarvm startup"); |
263 | | } |
264 | | } |
265 | | #endif |
266 | 144 | |
267 | 144 | lib_path[lib_path_i] = NULL; |
268 | 144 | |
269 | 144 | if (argi >= argc) { |
270 | 0 | fprintf(stderr, "ERROR: Missing input file.\n\n%s\n", USAGE); |
271 | 0 | return EXIT_FAILURE; |
272 | 0 | } |
273 | 144 | |
274 | 144 | instance = MVM_vm_create_instance(); |
275 | 144 | input_file = argv[argi++]; |
276 | 144 | |
277 | 144 | /* stash the rest of the raw command line args in the instance */ |
278 | 144 | MVM_vm_set_clargs(instance, argc - argi, argv + argi); |
279 | 144 | MVM_vm_set_prog_name(instance, input_file); |
280 | 144 | MVM_vm_set_exec_name(instance, executable_name); |
281 | 144 | MVM_vm_set_lib_path(instance, lib_path_i, lib_path); |
282 | 144 | |
283 | 144 | /* Ignore SIGPIPE by default, since we error-check reads/writes. This does |
284 | 144 | * not prevent users from setting up their own signal handler for SIGPIPE, |
285 | 144 | * which will take precedence over this ignore. */ |
286 | 144 | #ifndef _WIN32 |
287 | 144 | signal(SIGPIPE, SIG_IGN); |
288 | 144 | #endif |
289 | 144 | |
290 | 144 | if (debugserverport > 0) { |
291 | 0 | MVM_debugserver_init(instance->main_thread, debugserverport); |
292 | 0 |
|
293 | 0 | if (start_suspended) { |
294 | 0 | instance->main_thread->gc_status = MVMGCStatus_INTERRUPT | MVMSuspendState_SUSPEND_REQUEST; |
295 | 0 | } |
296 | 0 | } |
297 | 144 | |
298 | 144 | if (dump) MVM_vm_dump_file(instance, input_file); |
299 | 144 | else MVM_vm_run_file(instance, input_file); |
300 | 144 | |
301 | 144 | #ifdef HAVE_TELEMEH |
302 | | if (getenv("MVM_TELEMETRY_LOG") && telemeh_inited) { |
303 | | MVM_telemetry_interval_stop(0, interval_id, "moarvm teardown"); |
304 | | MVM_telemetry_finish(); |
305 | | } |
306 | | #endif |
307 | 144 | |
308 | 144 | if (full_cleanup) { |
309 | 0 | MVM_vm_destroy_instance(instance); |
310 | 0 | return EXIT_SUCCESS; |
311 | 0 | } |
312 | 144 | else { |
313 | 144 | MVM_vm_exit(instance); |
314 | 144 | } |
315 | 144 | } |