termux-packages/root-packages/wavemon/pthread_cancel.patch

--- a/info_scr.c
+++ b/info_scr.c
@@ -30,12 +30,28 @@ static struct iw_nl80211_linkstat *ls_tm
 				  *ls_new = NULL;
 static pthread_mutex_t linkstat_mutex;
 
+#ifdef __ANDROID__
+static void thread_signal_handler(int signum)
+{
+	pthread_exit(0);
+}
+#endif
+
 /** Sampling pthread - shared by info and histogram screen. */
 static void *sampling_loop(void *arg)
 {
 	const bool do_not_swap_pointers = (bool)arg;
 	sigset_t blockmask;
 
+#ifdef __ANDROID__
+	struct sigaction actions;
+	memset(&actions, 0, sizeof(actions));
+	sigemptyset(&actions.sa_mask);
+	actions.sa_flags = 0;
+	actions.sa_handler = thread_signal_handler;
+	sigaction(SIGUSR2, &actions, NULL);
+#endif
+
 	/* See comment in iw_scan.c for rationale of blocking SIGWINCH. */
 	sigemptyset(&blockmask);
 	sigaddset(&blockmask, SIGWINCH);
@@ -48,12 +64,23 @@ static void *sampling_loop(void *arg)
 
 			if (do_not_swap_pointers)
 				continue;
+#ifndef __ANDROID__
 			pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
+#else
+			sigset_t pthread_cancel_block;
+			sigemptyset(&pthread_cancel_block);
+			sigaddset(&pthread_cancel_block, SIGUSR2);
+			sigprocmask(SIG_BLOCK, &pthread_cancel_block, NULL);
+#endif
 			pthread_mutex_lock(&linkstat_mutex);
 			ls_new = ls_tmp;
 			ls_tmp = NULL;
 			pthread_mutex_unlock(&linkstat_mutex);
+#ifndef __ANDROID__
 			pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
+#else
+			sigprocmask(SIG_UNBLOCK, &pthread_cancel_block, NULL);
+#endif
 		}
 	} while (usleep(conf.stat_iv * 1000) == 0);
 	return NULL;
@@ -77,7 +104,11 @@ void sampling_init(bool do_not_swap_poin
 
 void sampling_stop(void)
 {
+#ifndef __ANDROID__
 	pthread_cancel(sampling_thread);
+#else
+	pthread_kill(sampling_thread, SIGUSR2);
+#endif
 	pthread_join(sampling_thread, NULL);
 }
 
--- a/iw_scan.c
+++ b/iw_scan.c
@@ -397,16 +397,34 @@ static void _write_warning_msg(struct sc
 
 	va_start(argp, format);
 
+#ifndef __ANDROID__
 	pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
+#else
+	sigset_t pthread_cancel_block;
+	sigemptyset(&pthread_cancel_block);
+	sigaddset(&pthread_cancel_block, SIGUSR2);
+	sigprocmask(SIG_BLOCK, &pthread_cancel_block, NULL);
+#endif
 	pthread_mutex_lock(&sr->mutex);
 
 	_clear_scan_result(sr);
 	vsnprintf(sr->msg, sizeof(sr->msg), format, argp);
 
 	pthread_mutex_unlock(&sr->mutex);
+#ifndef __ANDROID__
 	pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
+#else
+	sigprocmask(SIG_UNBLOCK, &pthread_cancel_block, NULL);
+#endif
 }
 
+#ifdef __ANDROID__
+static void thread_signal_handler(int signum)
+{
+	pthread_exit(0);
+}
+#endif
+
 /** The actual scan thread. */
 void *do_scan(void *sr_ptr)
 {
@@ -414,6 +432,15 @@ void *do_scan(void *sr_ptr)
 	sigset_t blockmask;
 	int ret = 0;
 
+#ifdef __ANDROID__
+	struct sigaction actions;
+	memset(&actions, 0, sizeof(actions));
+	sigemptyset(&actions.sa_mask);
+	actions.sa_flags = 0;
+	actions.sa_handler = thread_signal_handler;
+	sigaction(SIGUSR2, &actions, NULL);
+#endif
+
 	/* SIGWINCH is supposed to be handled in the main thread. */
 	sigemptyset(&blockmask);
 	sigaddset(&blockmask, SIGWINCH);
@@ -465,7 +492,14 @@ void *do_scan(void *sr_ptr)
 					compute_channel_stats(tmp);
 					sort_scan_list(&tmp->head);
 
+#ifndef __ANDROID__
 					pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
+#else
+					sigset_t pthread_cancel_block;
+					sigemptyset(&pthread_cancel_block);
+					sigaddset(&pthread_cancel_block, SIGUSR2);
+					sigprocmask(SIG_BLOCK, &pthread_cancel_block, NULL);
+#endif
 					pthread_mutex_lock(&sr->mutex);
 
 					_clear_scan_result(sr);
@@ -475,7 +509,11 @@ void *do_scan(void *sr_ptr)
 					memcpy(&(sr->num), &(tmp->num), sizeof(tmp->num));
 
 					pthread_mutex_unlock(&sr->mutex);
+#ifndef __ANDROID__
 					pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
+#else
+					sigprocmask(SIG_UNBLOCK, &pthread_cancel_block, NULL);
+#endif
 				}
 				free(tmp);
 			}
--- a/scan_scr.c
+++ b/scan_scr.c
@@ -299,7 +299,11 @@ void scr_aplst_fini(void)
 	/* Unlock mutex in case it was taken when scr_aplst_loop got interrupted by a SIGWINCH.
 	 * We are ignoring the error (EPERM) here if the main thread did not acquire the mutex. */
 	pthread_mutex_unlock(&sr.mutex);
+#ifndef __ANDROID__
 	pthread_cancel(scan_thread);
+#else
+	pthread_kill(scan_thread, SIGUSR2);
+#endif
 	pthread_join(scan_thread, NULL);
 	delwin(w_aplst);
 }