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-rw-r--r--src/MTS_IO_LockFile.cpp94
-rw-r--r--src/MTS_IO_SerialConnection.cpp85
2 files changed, 108 insertions, 71 deletions
diff --git a/src/MTS_IO_LockFile.cpp b/src/MTS_IO_LockFile.cpp
index b74ba73..7f84f42 100644
--- a/src/MTS_IO_LockFile.cpp
+++ b/src/MTS_IO_LockFile.cpp
@@ -18,9 +18,9 @@
*
*/
-/*!
+/*!
\file MTS_IO_LockFile.cpp
- \brief A brief description
+ \brief A brief description
\date Oct 8, 2014
\author sgodinez
@@ -29,13 +29,7 @@
#include <mts/MTS_IO_LockFile.h>
#include <mts/MTS_Timer.h>
-#include <mts/MTS_Logger.h>
-#include <mts/MTS_System.h>
-#include <mts/MTS_Text.h>
#include <sys/file.h>
-#include <sys/stat.h>
-#include <errno.h>
-#include <string.h>
#include <unistd.h>
using namespace MTS::IO;
@@ -43,79 +37,49 @@ using namespace MTS::IO;
LockFile::LockFile(const std::string& sFile)
: m_sFile(sFile)
, m_iLockFd(-1)
+, m_iLockErr(-1)
{
-
}
-LockFile::~LockFile() {
+LockFile::~LockFile()
+{
unlock();
}
-bool LockFile::lock(uint32_t attemptMillis) {
- if(isLocked()) {
+bool LockFile::lock(uint32_t attemptMillis)
+{
+ if (isLocked()) {
return true;
}
- MTS::Timer timer;
-
- timer.start();
- while(timer.getMillis() < attemptMillis) {
- m_iLockFd =::open(m_sFile.c_str(), O_CREAT | O_WRONLY | O_TRUNC | O_EXCL, 0644);
- if (m_iLockFd < 0) {
- // device already locked -> bail out
- printWarning("LockFile| Failed to Lock [%s] [%d][%s]", m_sFile.c_str(), errno, strerror(errno));
-
- //Check if lock file's process still exists
- std::string sResult;
- if(MTS::System::readFile(m_sFile, sResult) == 0 && sResult.size() > 0) {
- struct stat sts;
- std::string sProc = "/proc/" + MTS::Text::trim(sResult);
- if (stat(sProc.c_str(), &sts) == -1 && errno == ENOENT) {
- printWarning("LockFile| Current Lock's Process [%s] does not exist. Removing lock.", sResult.c_str());
- // process doesn't exist -> remove file
- ::unlink(m_sFile.c_str());
- }
- }
-
- } else {
- //TODO: Investigate using flock in addition to minicom-style lock : flock(m_iLockFd, LOCK_EX | LOCK_NB);
-
- // %4d to make concurrent mgetty (if any) happy.
- // Mgetty treats 4-bytes lock files as binary,
- // not text, PID. Making 5+ char file. Brrr...
- char buf[256] = {0};
- size_t written = 0;
-
- sprintf(buf, "%4d\n", getpid());
- size_t wsize = strlen(buf);
-
- written = write(m_iLockFd, buf, wsize);
-
- if (wsize != written) {
- printError("LockFile| Error writing to lock file [%s] [%d][%s]", m_sFile.c_str(), errno, strerror(errno));
- close(m_iLockFd);
- return false;
- }
- else {
- close(m_iLockFd);
+ m_iLockFd = ::open(m_sFile.c_str(), O_CREAT | O_RDWR, 0644);
+ if (m_iLockFd >= 0) {
+ MTS::Timer timer;
+ timer.start();
+ while (timer.getMillis() < attemptMillis) {
+ m_iLockErr = ::flock(m_iLockFd, LOCK_EX | LOCK_NB);
+ if (m_iLockErr == 0) {
return true;
+ } else if (errno != EWOULDBLOCK) {
+ break;
}
+ ::usleep(((rand() % 10) + 1) * 100000); //Sleep from 100ms to 1 Second
}
- uint32_t randomSleepTime = ((rand() % 10) + 1) * 100000; //Sleep from 100ms to 1 Second
- ::usleep(randomSleepTime);
+ ::close(m_iLockFd);
}
+ m_iLockFd = -1;
return false;
}
-void LockFile::unlock() {
- if(isLocked()) {
- ::unlink(m_sFile.c_str());
- //TODO: flock cleanup : flock(m_iLockFd, LOCK_UN);
- m_iLockFd = -1;
- }
+void LockFile::unlock()
+{
+ ::flock(m_iLockFd, LOCK_UN);
+ ::close(m_iLockFd);
+ m_iLockFd = -1;
+ m_iLockErr = -1;
}
-bool LockFile::isLocked() {
- return m_iLockFd >= 0;
+bool LockFile::isLocked()
+{
+ return m_iLockErr == 0;
}
-
diff --git a/src/MTS_IO_SerialConnection.cpp b/src/MTS_IO_SerialConnection.cpp
index a9f3d6e..936d28d 100644
--- a/src/MTS_IO_SerialConnection.cpp
+++ b/src/MTS_IO_SerialConnection.cpp
@@ -50,6 +50,7 @@ SerialConnection::Builder::Builder(const std::string& sPortName)
, m_eParity(OFF)
, m_eDataBits(B8)
, m_eStopBits(B1)
+, m_eFlowControl(NONE)
, m_bBuilt(false)
{
@@ -254,6 +255,77 @@ int SerialConnection::getFileDescriptor() {
return h;
}
+const char* SerialConnection::humanSpeed(speed_t speed) {
+ const char *hspeed;
+ switch (speed) {
+ case B0: hspeed = "B0";
+ break;
+ case B50: hspeed = "B50";
+ break;
+ case B75: hspeed = "B75";
+ break;
+ case B110: hspeed = "B110";
+ break;
+ case B134: hspeed = "B134";
+ break;
+ case B150: hspeed = "B150";
+ break;
+ case B200: hspeed = "B200";
+ break;
+ case B300: hspeed = "B300";
+ break;
+ case B600: hspeed = "B600";
+ break;
+ case B1200: hspeed = "B1200";
+ break;
+ case B1800: hspeed = "B1800";
+ break;
+ case B2400: hspeed = "B2400";
+ break;
+ case B4800: hspeed = "B4800";
+ break;
+ case B9600: hspeed = "B9600";
+ break;
+ case B19200: hspeed = "B19200";
+ break;
+ case B57600: hspeed = "B57600";
+ break;
+ case B115200: hspeed = "B115200";
+ break;
+ default: hspeed = "unknown";
+ }
+ return hspeed;
+}
+
+void SerialConnection::printPortSetting(const termios *options){
+ printDebug("SERIAL| port settings:");
+ printDebug("SERIAL| in speed:%s out speed:%s",
+ humanSpeed(cfgetispeed(options)),
+ humanSpeed(cfgetospeed(options)));
+ int data_length=0;
+ if ((options->c_cflag&CSIZE) == CS5) {
+ data_length = 5;
+ }
+ if ((options->c_cflag&CSIZE) == CS6) {
+ data_length = 6;
+ }
+ if ((options->c_cflag&CSIZE) == CS7) {
+ data_length = 7;
+ }
+ if ((options->c_cflag&CSIZE) == CS8) {
+ data_length = 8;
+ }
+ printDebug("SERIAL| data:%d stop bits:%d", data_length,options->c_cflag&CSTOPB?2:1);
+ if (!(options->c_cflag&PARENB)) {
+ printDebug("SERIAL| parity: NONE");
+ } else if (options->c_cflag&PARODD) {
+ printDebug("SERIAL| parity: ODD");
+ } else {
+ printDebug("SERIAL| parity: EVEN");
+ }
+ printDebug("SERIAL| CRTSCTS:%d", options->c_cflag&CRTSCTS?1:0);
+}
+
bool SerialConnection::doOpen(const int32_t& timeoutMillis) {
m_apHandleLock->lock();
@@ -353,6 +425,7 @@ bool SerialConnection::doOpen(const int32_t& timeoutMillis) {
}
//Set Parity, Stop Bits, and Data Length
+ options.c_cflag &= ~(PARODD | PARENB);
switch(m_eParity) {
case ODD:
options.c_cflag |= ( PARODD | PARENB );
@@ -364,7 +437,6 @@ bool SerialConnection::doOpen(const int32_t& timeoutMillis) {
case OFF:
default:
- options.c_cflag &= ~PARENB;
break;
}
@@ -390,7 +462,7 @@ bool SerialConnection::doOpen(const int32_t& timeoutMillis) {
switch(m_eStopBits) {
case B2:
- options.c_cflag &= CSTOPB;
+ options.c_cflag |= CSTOPB;
break;
case B1:
@@ -401,19 +473,20 @@ bool SerialConnection::doOpen(const int32_t& timeoutMillis) {
switch (m_eFlowControl) {
case RTS_CTS:
- options.c_cflag &= CRTSCTS;
+ options.c_cflag |= CRTSCTS;
break;
case NONE:
default:
- options.c_cflag &= ~(IXON | IXOFF | IXANY);
- break;
+ options.c_cflag &= ~CRTSCTS;
+ break;
}
//Set Control Modes
options.c_cc[VMIN] = 0;
options.c_cc[VTIME] = 2; // tenths of seconds
-
+ printPortSetting(&options);
result = tcsetattr(m_iHandle, TCSANOW, &options);
+
if (result == -1) {
printWarning("SERIAL| Failed to set configurations on port [%s] [%d]%s", m_sPortName.c_str(), errno,
errno == 13 ? " (Permission Denied)" : "");
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-12 08:14:36 +0000