1 files changed, 0 insertions, 395 deletions

diff --git a/src/common/compat.c b/src/common/compat.c
index 6d36321193..5575316b2b 100644
--- a/src/common/compat.c
+++ b/src/common/compat.c
@@ -27,7 +27,6 @@
 #include "compat.h"
 
 #ifdef _WIN32
-#include <process.h>
 #include <windows.h>
 #include <sys/locking.h>
 #endif
@@ -2544,109 +2543,6 @@ get_uname(void)
  *   Process control
  */
 
-#if defined(USE_PTHREADS)
-/** Wraps a void (*)(void*) function and its argument so we can
- * invoke them in a way pthreads would expect.
- */
-typedef struct tor_pthread_data_t {
-  void (*func)(void *);
-  void *data;
-} tor_pthread_data_t;
-/** Given a tor_pthread_data_t <b>_data</b>, call _data-&gt;func(d-&gt;data)
- * and free _data.  Used to make sure we can call functions the way pthread
- * expects. */
-static void *
-tor_pthread_helper_fn(void *_data)
-{
-  tor_pthread_data_t *data = _data;
-  void (*func)(void*);
-  void *arg;
-  /* mask signals to worker threads to avoid SIGPIPE, etc */
-  sigset_t sigs;
-  /* We're in a subthread; don't handle any signals here. */
-  sigfillset(&sigs);
-  pthread_sigmask(SIG_SETMASK, &sigs, NULL);
-
-  func = data->func;
-  arg = data->data;
-  tor_free(_data);
-  func(arg);
-  return NULL;
-}
-/**
- * A pthread attribute to make threads start detached.
- */
-static pthread_attr_t attr_detached;
-/** True iff we've called tor_threads_init() */
-static int threads_initialized = 0;
-#endif
-
-/** Minimalist interface to run a void function in the background.  On
- * Unix calls fork, on win32 calls beginthread.  Returns -1 on failure.
- * func should not return, but rather should call spawn_exit.
- *
- * NOTE: if <b>data</b> is used, it should not be allocated on the stack,
- * since in a multithreaded environment, there is no way to be sure that
- * the caller's stack will still be around when the called function is
- * running.
- */
-int
-spawn_func(void (*func)(void *), void *data)
-{
-#if defined(USE_WIN32_THREADS)
-  int rv;
-  rv = (int)_beginthread(func, 0, data);
-  if (rv == (int)-1)
-    return -1;
-  return 0;
-#elif defined(USE_PTHREADS)
-  pthread_t thread;
-  tor_pthread_data_t *d;
-  if (PREDICT_UNLIKELY(!threads_initialized))
-    tor_threads_init();
-  d = tor_malloc(sizeof(tor_pthread_data_t));
-  d->data = data;
-  d->func = func;
-  if (pthread_create(&thread,&attr_detached,tor_pthread_helper_fn,d))
-    return -1;
-  return 0;
-#else
-  pid_t pid;
-  pid = fork();
-  if (pid<0)
-    return -1;
-  if (pid==0) {
-    /* Child */
-    func(data);
-    tor_assert(0); /* Should never reach here. */
-    return 0; /* suppress "control-reaches-end-of-non-void" warning. */
-  } else {
-    /* Parent */
-    return 0;
-  }
-#endif
-}
-
-/** End the current thread/process.
- */
-void
-spawn_exit(void)
-{
-#if defined(USE_WIN32_THREADS)
-  _endthread();
-  //we should never get here. my compiler thinks that _endthread returns, this
-  //is an attempt to fool it.
-  tor_assert(0);
-  _exit(0);
-#elif defined(USE_PTHREADS)
-  pthread_exit(NULL);
-#else
-  /* http://www.erlenstar.demon.co.uk/unix/faq_2.html says we should
-   * call _exit, not exit, from child processes. */
-  _exit(0);
-#endif
-}
-
 /** Implementation logic for compute_num_cpus(). */
 static int
 compute_num_cpus_impl(void)
@@ -2935,280 +2831,6 @@ tor_gmtime_r(const time_t *timep, struct tm *result)
 }
 #endif
 
-#if defined(USE_WIN32_THREADS)
-void
-tor_mutex_init(tor_mutex_t *m)
-{
-  InitializeCriticalSection(&m->mutex);
-}
-void
-tor_mutex_uninit(tor_mutex_t *m)
-{
-  DeleteCriticalSection(&m->mutex);
-}
-void
-tor_mutex_acquire(tor_mutex_t *m)
-{
-  tor_assert(m);
-  EnterCriticalSection(&m->mutex);
-}
-void
-tor_mutex_release(tor_mutex_t *m)
-{
-  LeaveCriticalSection(&m->mutex);
-}
-unsigned long
-tor_get_thread_id(void)
-{
-  return (unsigned long)GetCurrentThreadId();
-}
-#elif defined(USE_PTHREADS)
-/** A mutex attribute that we're going to use to tell pthreads that we want
- * "reentrant" mutexes (i.e., once we can re-lock if we're already holding
- * them.) */
-static pthread_mutexattr_t attr_reentrant;
-/** Initialize <b>mutex</b> so it can be locked.  Every mutex must be set
- * up with tor_mutex_init() or tor_mutex_new(); not both. */
-void
-tor_mutex_init(tor_mutex_t *mutex)
-{
-  int err;
-  if (PREDICT_UNLIKELY(!threads_initialized))
-    tor_threads_init();
-  err = pthread_mutex_init(&mutex->mutex, &attr_reentrant);
-  if (PREDICT_UNLIKELY(err)) {
-    log_err(LD_GENERAL, "Error %d creating a mutex.", err);
-    tor_fragile_assert();
-  }
-}
-/** Wait until <b>m</b> is free, then acquire it. */
-void
-tor_mutex_acquire(tor_mutex_t *m)
-{
-  int err;
-  tor_assert(m);
-  err = pthread_mutex_lock(&m->mutex);
-  if (PREDICT_UNLIKELY(err)) {
-    log_err(LD_GENERAL, "Error %d locking a mutex.", err);
-    tor_fragile_assert();
-  }
-}
-/** Release the lock <b>m</b> so another thread can have it. */
-void
-tor_mutex_release(tor_mutex_t *m)
-{
-  int err;
-  tor_assert(m);
-  err = pthread_mutex_unlock(&m->mutex);
-  if (PREDICT_UNLIKELY(err)) {
-    log_err(LD_GENERAL, "Error %d unlocking a mutex.", err);
-    tor_fragile_assert();
-  }
-}
-/** Clean up the mutex <b>m</b> so that it no longer uses any system
- * resources.  Does not free <b>m</b>.  This function must only be called on
- * mutexes from tor_mutex_init(). */
-void
-tor_mutex_uninit(tor_mutex_t *m)
-{
-  int err;
-  tor_assert(m);
-  err = pthread_mutex_destroy(&m->mutex);
-  if (PREDICT_UNLIKELY(err)) {
-    log_err(LD_GENERAL, "Error %d destroying a mutex.", err);
-    tor_fragile_assert();
-  }
-}
-/** Return an integer representing this thread. */
-unsigned long
-tor_get_thread_id(void)
-{
-  union {
-    pthread_t thr;
-    unsigned long id;
-  } r;
-  r.thr = pthread_self();
-  return r.id;
-}
-#endif
-
-/** Return a newly allocated, ready-for-use mutex. */
-tor_mutex_t *
-tor_mutex_new(void)
-{
-  tor_mutex_t *m = tor_malloc_zero(sizeof(tor_mutex_t));
-  tor_mutex_init(m);
-  return m;
-}
-/** Release all storage and system resources held by <b>m</b>. */
-void
-tor_mutex_free(tor_mutex_t *m)
-{
-  if (!m)
-    return;
-  tor_mutex_uninit(m);
-  tor_free(m);
-}
-
-/* Conditions. */
-#ifdef USE_PTHREADS
-#if 0
-/** Cross-platform condition implementation. */
-struct tor_cond_t {
-  pthread_cond_t cond;
-};
-/** Return a newly allocated condition, with nobody waiting on it. */
-tor_cond_t *
-tor_cond_new(void)
-{
-  tor_cond_t *cond = tor_malloc_zero(sizeof(tor_cond_t));
-  if (pthread_cond_init(&cond->cond, NULL)) {
-    tor_free(cond);
-    return NULL;
-  }
-  return cond;
-}
-/** Release all resources held by <b>cond</b>. */
-void
-tor_cond_free(tor_cond_t *cond)
-{
-  if (!cond)
-    return;
-  if (pthread_cond_destroy(&cond->cond)) {
-    log_warn(LD_GENERAL,"Error freeing condition: %s", strerror(errno));
-    return;
-  }
-  tor_free(cond);
-}
-/** Wait until one of the tor_cond_signal functions is called on <b>cond</b>.
- * All waiters on the condition must wait holding the same <b>mutex</b>.
- * Returns 0 on success, negative on failure. */
-int
-tor_cond_wait(tor_cond_t *cond, tor_mutex_t *mutex)
-{
-  return pthread_cond_wait(&cond->cond, &mutex->mutex) ? -1 : 0;
-}
-/** Wake up one of the waiters on <b>cond</b>. */
-void
-tor_cond_signal_one(tor_cond_t *cond)
-{
-  pthread_cond_signal(&cond->cond);
-}
-/** Wake up all of the waiters on <b>cond</b>. */
-void
-tor_cond_signal_all(tor_cond_t *cond)
-{
-  pthread_cond_broadcast(&cond->cond);
-}
-#endif
-/** Set up common structures for use by threading. */
-void
-tor_threads_init(void)
-{
-  if (!threads_initialized) {
-    pthread_mutexattr_init(&attr_reentrant);
-    pthread_mutexattr_settype(&attr_reentrant, PTHREAD_MUTEX_RECURSIVE);
-    tor_assert(0==pthread_attr_init(&attr_detached));
-    tor_assert(0==pthread_attr_setdetachstate(&attr_detached, 1));
-    threads_initialized = 1;
-    set_main_thread();
-  }
-}
-#elif defined(USE_WIN32_THREADS)
-#if 0
-static DWORD cond_event_tls_index;
-struct tor_cond_t {
-  CRITICAL_SECTION mutex;
-  smartlist_t *events;
-};
-tor_cond_t *
-tor_cond_new(void)
-{
-  tor_cond_t *cond = tor_malloc_zero(sizeof(tor_cond_t));
-  InitializeCriticalSection(&cond->mutex);
-  cond->events = smartlist_new();
-  return cond;
-}
-void
-tor_cond_free(tor_cond_t *cond)
-{
-  if (!cond)
-    return;
-  DeleteCriticalSection(&cond->mutex);
-  /* XXXX notify? */
-  smartlist_free(cond->events);
-  tor_free(cond);
-}
-int
-tor_cond_wait(tor_cond_t *cond, tor_mutex_t *mutex)
-{
-  HANDLE event;
-  int r;
-  tor_assert(cond);
-  tor_assert(mutex);
-  event = TlsGetValue(cond_event_tls_index);
-  if (!event) {
-    event = CreateEvent(0, FALSE, FALSE, NULL);
-    TlsSetValue(cond_event_tls_index, event);
-  }
-  EnterCriticalSection(&cond->mutex);
-
-  tor_assert(WaitForSingleObject(event, 0) == WAIT_TIMEOUT);
-  tor_assert(!smartlist_contains(cond->events, event));
-  smartlist_add(cond->events, event);
-
-  LeaveCriticalSection(&cond->mutex);
-
-  tor_mutex_release(mutex);
-  r = WaitForSingleObject(event, INFINITE);
-  tor_mutex_acquire(mutex);
-
-  switch (r) {
-    case WAIT_OBJECT_0: /* we got the mutex normally. */
-      break;
-    case WAIT_ABANDONED: /* holding thread exited. */
-    case WAIT_TIMEOUT: /* Should never happen. */
-      tor_assert(0);
-      break;
-    case WAIT_FAILED:
-      log_warn(LD_GENERAL, "Failed to acquire mutex: %d",(int) GetLastError());
-  }
-  return 0;
-}
-void
-tor_cond_signal_one(tor_cond_t *cond)
-{
-  HANDLE event;
-  tor_assert(cond);
-
-  EnterCriticalSection(&cond->mutex);
-
-  if ((event = smartlist_pop_last(cond->events)))
-    SetEvent(event);
-
-  LeaveCriticalSection(&cond->mutex);
-}
-void
-tor_cond_signal_all(tor_cond_t *cond)
-{
-  tor_assert(cond);
-
-  EnterCriticalSection(&cond->mutex);
-  SMARTLIST_FOREACH(cond->events, HANDLE, event, SetEvent(event));
-  smartlist_clear(cond->events);
-  LeaveCriticalSection(&cond->mutex);
-}
-#endif
-void
-tor_threads_init(void)
-{
-#if 0
-  cond_event_tls_index = TlsAlloc();
-#endif
-  set_main_thread();
-}
-#endif
-
 #if defined(HAVE_MLOCKALL) && HAVE_DECL_MLOCKALL && defined(RLIMIT_MEMLOCK)
 /** Attempt to raise the current and max rlimit to infinity for our process.
  * This only needs to be done once and can probably only be done when we have
@@ -3292,23 +2914,6 @@ tor_mlockall(void)
 #endif
 }
 
-/** Identity of the "main" thread */
-static unsigned long main_thread_id = -1;
-
-/** Start considering the current thread to be the 'main thread'.  This has
- * no effect on anything besides in_main_thread(). */
-void
-set_main_thread(void)
-{
-  main_thread_id = tor_get_thread_id();
-}
-/** Return true iff called from the main thread. */
-int
-in_main_thread(void)
-{
-  return main_thread_id == tor_get_thread_id();
-}
-
 /**
  * On Windows, WSAEWOULDBLOCK is not always correct: when you see it,
  * you need to ask the socket for its actual errno.  Also, you need to