2 # -*- coding: utf-8 -*-
4 # Copyright (c) 2014. The SimGrid Team. All rights reserved.
6 # This program is free software; you can redistribute it and/or modify it
7 # under the terms of the license (GNU LGPL) which comes with this package.
11 types = [('TCHAR', 'char', 'c')
12 ,('TSTRING', 'const char*', 'cc')
14 ,('TLONG', 'long', 'l')
15 ,('TUCHAR', 'unsigned char', 'uc')
16 ,('TUSHORT', 'unsigned short', 'us')
17 ,('TUINT', 'unsigned int', 'ui')
18 ,('TULONG', 'unsigned long', 'ul')
19 ,('TFLOAT', 'float', 'f')
20 ,('TDOUBLE', 'double', 'd')
21 ,('TDPTR', 'void*', 'dp')
22 ,('TFPTR', 'FPtr', 'fp')
23 ,('TCPTR', 'const void*', 'cp')
24 ,('TSIZE', 'size_t', 'sz')
25 ,('TSGSIZE', 'sg_size_t', 'sgsz')
26 ,('TSGOFF', 'sg_offset_t', 'sgoff')
27 ,('TVOID', 'void', '')
28 ,('TDSPEC', 'void*', 'dp')
29 ,('TFSPEC', 'FPtr', 'fp')]
32 simcall_types = {k:v for _,k,v in types}
33 def __init__(self, name, type, casted=None):
37 assert type in self.simcall_types, '%s not in (%s)'%(type, ', '.join(self.simcall_types.keys()))
40 return self.simcall_types[self.type]
43 return '%s'%self.casted if self.casted else self.type
46 return '(%s)'%self.casted if self.casted else ''
48 class Simcall(object):
51 def __init__(self, name, res, args, has_answer=True):
55 self.has_answer = has_answer
58 # smx_user.c simcall_BODY_
59 # smx_*.c void SIMIX_pre_host_on(smx_simcall_t simcall, smx_host_t h)
64 if self.simcalls_BODY is None:
65 f = open('smx_user.c')
66 self.simcalls_BODY = set(re.findall('simcall_BODY_(.*?)\(', f.read()))
68 if self.name not in self.simcalls_BODY:
69 print '# ERROR: No function calling simcall_BODY_%s'%self.name
70 print '# Add something like this to smx_user.c:'
71 print '''%s simcall_%s(%s)
73 return simcall_BODY_%s(%s);
74 }\n'''%(self.res.ret()
76 ,', '.join('%s %s'%(arg.ret(), arg.name)
79 ,', '.join(arg.name for arg in self.args))
84 if self.simcalls_PRE is None:
85 self.simcalls_PRE = set()
86 for fn in glob.glob('smx_*') + glob.glob('../mc/*'):
88 self.simcalls_PRE |= set(re.findall('SIMIX_pre_(.*?)\(', f.read()))
90 if self.name not in self.simcalls_PRE:
91 print '# ERROR: No function called SIMIX_pre_%s'%self.name
92 print '# Add something like this to smx_.*.c:'
93 print '''%s SIMIX_pre_%s(smx_simcall_t simcall%s)
95 // Your code handling the simcall
96 }\n'''%(self.res.ret()
98 ,''.join(', %s %s'%(arg.ret(), arg.name)
99 for arg in self.args))
104 return ' SIMCALL_%s,'%(self.name.upper())
107 return '[SIMCALL_%s] = "SIMCALL_%s",'%(self.name.upper(), self.name.upper())
111 for i in range(len(self.args)):
112 res.append(self.arg_getter(i))
113 res.append(self.arg_setter(i))
114 if self.res.type != 'void':
115 res.append('static inline %s simcall_%s__get__result(smx_simcall_t simcall){'%(self.res.ret(), self.name))
116 res.append(' return %s simcall->result.%s;'%(self.res.cast(), self.res.field()))
118 res.append('static inline void simcall_%s__set__result(smx_simcall_t simcall, %s result){'%(self.name, self.res.type,))
119 res.append(' simcall->result.%s = result;'%(self.res.field()))
121 return '\n'.join(res)
123 def arg_getter(self, i):
126 static inline %s simcall_%s__get__%s(smx_simcall_t simcall){
127 return %s simcall->args[%i].%s;
128 }'''%(arg.ret(), self.name, arg.name, arg.cast(), i, arg.field())
130 def arg_setter(self, i):
133 static inline void simcall_%s__set__%s(smx_simcall_t simcall, %s arg){
134 simcall->args[%i].%s = arg;
135 }'''%(self.name, arg.name, arg.type, i, arg.field())
138 return '''case SIMCALL_%s:
139 %sSIMIX_pre_%s(simcall %s);
141 '''%(self.name.upper(),
142 'simcall->result.%s = '%self.res.field() if self.res.type != 'void' and self.has_answer else ' ',
144 ''.join(', %s simcall->args[%d].%s'%(arg.cast(), i, arg.field())
145 for i, arg in enumerate(self.args)),
146 'SIMIX_simcall_answer(simcall);\n ' if self.has_answer else ' ')
150 inline static %s simcall_BODY_%s(%s) {
151 smx_process_t self = SIMIX_process_self();
153 /* Go to that function to follow the code flow through the simcall barrier */
154 if (0) SIMIX_pre_%s(%s);
155 /* end of the guide intended to the poor programmer wanting to go from MSG to Surf */
157 self->simcall.call = SIMCALL_%s;
158 memset(&self->simcall.result, 0, sizeof(self->simcall.result));
159 memset(self->simcall.args, 0, sizeof(self->simcall.args));
161 if (self != simix_global->maestro_process) {
162 XBT_DEBUG("Yield process '%%s' on simcall %%s (%%d)", self->name,
163 SIMIX_simcall_name(self->simcall.call), (int)self->simcall.call);
164 SIMIX_process_yield(self);
166 SIMIX_simcall_handle(&self->simcall, 0);
171 ,', '.join('%s %s'%(arg.ret(), arg.name)
172 for arg in self.args)
174 ,', '.join(["&self->simcall"]+ [arg.name for arg in self.args])
176 ,'\n'.join(' self->simcall.args[%d].%s = (%s) %s;'%(i, arg.field(), arg.type, arg.name)
177 for i, arg in enumerate(self.args))
178 ,'' if self.res.type == 'void' else 'return self->simcall.result.%s;'%self.res.field())
183 simcalls_guarded = {}
184 for line in open(fn).read().split('\n'):
185 if line.startswith('##'):
187 simcalls_guarded[re.search(r'## *(.*)', line).group(1)] = resdi
188 if line.startswith('#') or not line:
190 match = re.match(r'(\S*?) *(\S*?) *\((.*?)(?:, *(.*?))?\) *(.*)', line)
192 name, ans, rest, resc, args = match.groups()
194 for n,t,c in re.findall(r'\((.*?), *(.*?)(?:, *(.*?))?\)', args):
195 sargs.append(Arg(n,t,c))
196 sim = Simcall(name, Arg('result', rest, resc), sargs, ans == 'True')
201 return simcalls, simcalls_guarded
205 fd.write('/**********************************************************************/\n')
206 fd.write('/* File generated by src/simix/simcalls.py from src/simix/simcalls.in */\n')
208 fd.write('/* DO NOT EVER CHANGE THIS FILE */\n')
210 fd.write('/* change simcalls specification in src/simix/simcalls.in */\n')
211 fd.write('/**********************************************************************/\n\n')
213 fd.write(' * Note that the name comes from http://en.wikipedia.org/wiki/Popping\n')
214 fd.write(' * Indeed, the control flow is doing a strange dance in there.\n')
216 fd.write(' * That\'s not about http://en.wikipedia.org/wiki/Poop, despite the odor :)\n')
220 def handle(fd,func, simcalls, guarded_simcalls):
221 fd.write('\n'.join(func(simcall) for simcall in simcalls))
222 for guard, list in guarded_simcalls.items():
223 fd.write('\n#ifdef %s\n'%(guard))
224 fd.write('\n'.join(func(simcall) for simcall in list))
225 fd.write('\n#endif\n')
227 if __name__=='__main__':
229 simcalls, simcalls_dict = parse('simcalls.in')
232 ok &= all(map(Simcall.check, simcalls))
233 for k,v in simcalls_dict.items():
234 ok &= all(map(Simcall.check, v))
235 # FIXME: we should not hide it
237 # print ("Some checks fail!")
241 ### smx_popping_accessors.c
243 fd = header('popping_accessors.h')
244 handle(fd, Simcall.accessors, simcalls, simcalls_dict)
248 ### smx_popping_enum.c
250 fd = header("popping_enum.h")
252 fd.write(' * @brief All possible simcalls.\n')
254 fd.write('typedef enum {\n')
255 fd.write(' SIMCALL_NONE,\n')
257 handle(fd, Simcall.enum, simcalls, simcalls_dict)
259 fd.write(' NUM_SIMCALLS\n')
260 fd.write('} e_smx_simcall_t;\n')
264 ### smx_popping_generated.c
267 fd = header("popping_generated.c")
269 fd.write('#include "smx_private.h"\n');
270 fd.write('#ifdef HAVE_MC\n');
271 fd.write('#include "mc/mc_private.h"\n');
272 fd.write('#endif\n');
274 fd.write('XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_popping);\n\n');
276 fd.write('/** @brief Simcalls\' names (generated from src/simix/simcalls.in) */\n')
277 fd.write('const char* simcall_names[] = {\n')
279 handle(fd, Simcall.string, simcalls, simcalls_dict)
281 fd.write('[SIMCALL_NONE] = "NONE"\n')
286 fd.write(' * @brief (in kernel mode) unpack the simcall and activate the handler\n');
288 fd.write(' * This function is generated from src/simix/simcalls.in\n')
290 fd.write('void SIMIX_simcall_handle(smx_simcall_t simcall, int value) {\n');
291 fd.write(' XBT_DEBUG("Handling simcall %p: %s", simcall, SIMIX_simcall_name(simcall->call));\n');
292 fd.write(' SIMCALL_SET_MC_VALUE(simcall, value);\n');
293 fd.write(' if (simcall->issuer->context->iwannadie && simcall->call != SIMCALL_PROCESS_CLEANUP)\n');
294 fd.write(' return;\n');
295 fd.write(' switch (simcall->call) {\n');
297 handle(fd, Simcall.case, simcalls, simcalls_dict)
299 fd.write(' case NUM_SIMCALLS:\n');
300 fd.write(' break;\n');
301 fd.write(' case SIMCALL_NONE:\n');
302 fd.write(' THROWF(arg_error,0,"Asked to do the noop syscall on %s@%s",\n');
303 fd.write(' SIMIX_process_get_name(simcall->issuer),\n');
304 fd.write(' SIMIX_host_get_name(SIMIX_process_get_host(simcall->issuer))\n');
306 fd.write(' break;\n');
314 ### smx_popping_bodies.c
316 fd = header('popping_bodies.c')
317 fd.write('#include "smx_private.h"\n')
318 fd.write('#include "mc/mc_interface.h"\n')
319 fd.write('#include "xbt/ex.h"\n')
320 handle(fd, Simcall.body, simcalls, simcalls_dict)