jackc/misc/threads.c

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#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include "threads.h"
void* parseunit(void* input) {
COMPILEUNIT* unit = (COMPILEUNIT*)input;
unit->parsed = parse(unit->parser);
pthread_exit(NULL);
}
void* compileunit(void* input) {
COMPILEUNIT* unit = (COMPILEUNIT*)input;
unit->compiled = compileclass(unit->compiler, unit->parsed);
pthread_exit(NULL);
}
char* getclassname(char* filename) {
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int len = strlen(filename) - 1;
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for(len = len; len >= 0; len--)
if(filename[len] == '.')
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break;
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int sz = sizeof(char) * (len + 1);
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char* classname = (char*)malloc(sz);
snprintf(classname, sz, "%s", filename); // legitimately needs to be snprintf
return classname;
}
void* vmtranslateunit(void* input) {
COMPILEUNIT* unit = (COMPILEUNIT*)input;
if(unit->compiled == NULL) {
eprintf("Class '%s' is empty; file '%s'\n", unit->parsed->name, unit->file->name);
exit(1);
}
char* classname = getclassname(unit->file->name);
unit->vmtranslator = mkvmtranslator(classname, unit->compiled);
unit->asmlns = translatevm(unit->vmtranslator);
free(classname);
pthread_exit(NULL);
}
void waitthreads(pthread_t* threads, int amount) {
void* status;
int code;
for(int i = 0; i < amount; i++) {
code = pthread_join(threads[i], &status);
if(code) {
eprintf("Error while joining thread %i: %s\n", i, strerror(code));
exit(code);
}
}
}
void actonunits(COMPILEUNIT* units, void*(*fun)(void*)) {
pthread_t mythreads[_SC_THREAD_THREADS_MAX];
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_JOINABLE);
COMPILEUNIT* curr = units;
int i;
int code;
do {
i = 0;
while(curr != NULL && i < _SC_THREAD_THREADS_MAX) {
code = pthread_create(&mythreads[i], &attr, fun, curr);
if(code) {
eprintf("Error while creating thread %i: %s\n", i, strerror(code));
exit(code);
}
curr = curr->next;
i++;
}
waitthreads(mythreads, i);
} while(i == _SC_THREAD_THREADS_MAX);
pthread_attr_destroy(&attr);
}
void freeunit(COMPILEUNIT* u) {
freeparser(u->parser);
freelnblk(u->compiled);
freevmtranslator(u->vmtranslator);
free(u);
}