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Ignore SIGIO POSIX signals

This commit is contained in:
Will Hedgecock 2021-11-03 13:24:44 -05:00
parent 1ef3467529
commit 1ccc3b7d8a
1 changed files with 11 additions and 2 deletions
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13
src/main/c/Posix/SerialPort_Posix.c
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@ -2,7 +2,7 @@
* SerialPort_Posix.c
*
* Created on: Feb 25, 2012
* Last Updated on: Oct 29, 2021
* Last Updated on: Nov 01, 2021
* Author: Will Hedgecock
*
* Copyright (C) 2012-2021 Fazecast, Inc.
@ -26,6 +26,7 @@
#include <errno.h>
#include <fcntl.h>
#include <poll.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <sys/file.h>
@ -216,7 +217,7 @@ JNIEXPORT void JNICALL Java_com_fazecast_jSerialComm_SerialPort_initializeLibrar
serialCommClass = (jclass)(*env)->NewGlobalRef(env, serialComm);
serialCommConstructor = (*env)->GetMethodID(env, serialCommClass, "<init>", "()V");
// Cache
// Cache Java fields as global references
serialPortFdField = (*env)->GetFieldID(env, serialCommClass, "portHandle", "J");
comPortField = (*env)->GetFieldID(env, serialCommClass, "comPort", "Ljava/lang/String;");
friendlyNameField = (*env)->GetFieldID(env, serialCommClass, "friendlyName", "Ljava/lang/String;");
@ -243,6 +244,14 @@ JNIEXPORT void JNICALL Java_com_fazecast_jSerialComm_SerialPort_initializeLibrar
readTimeoutField = (*env)->GetFieldID(env, serialCommClass, "readTimeout", "I");
writeTimeoutField = (*env)->GetFieldID(env, serialCommClass, "writeTimeout", "I");
eventFlagsField = (*env)->GetFieldID(env, serialCommClass, "eventFlags", "I");
// Disable handling of SIGIO POSIX signals
sigset_t blockMask;
sigemptyset(&blockMask);
struct sigaction ignoreAction = { 0 };
ignoreAction.sa_handler = SIG_IGN;
ignoreAction.sa_mask = blockMask;
sigaction(SIGIO, &ignoreAction, NULL);
}
JNIEXPORT void JNICALL Java_com_fazecast_jSerialComm_SerialPort_uninitializeLibrary(JNIEnv *env, jclass serialComm)