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Change mutex lock model to avoid dead lock and ensure locks are always released.

Browse source 
Additional cosmetic fixes:
 move 'name' as protected
 remove unnecessary local var
 Fix debug log
This commit is contained in:
cslashm 2018-03-26 12:38:38 +02:00
parent 641dfc991f
commit 100b7bc10d
5 changed files with 202 additions and 385 deletions
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16
src/device/device.hpp
View file

@ -78,8 +78,10 @@ namespace hw {
return false;
}
class device {
protected:
std::string name;
public:
device() {}
@ -92,8 +94,6 @@ namespace hw {
static const int SIGNATURE_FAKE = 1;
std::string name;
/* ======================================================================= */
/* SETUP/TEARDOWN */
/* ======================================================================= */
@ -104,7 +104,15 @@ namespace hw {
virtual bool release() = 0;
virtual bool connect(void) = 0;
virtual bool disconnect() = 0;
virtual bool disconnect(void) = 0;
/* ======================================================================= */
/* LOCKER */
/* ======================================================================= */
virtual void lock(void) = 0;
virtual void unlock(void) = 0;
virtual bool try_lock(void) = 0;
/* ======================================================================= */
/* WALLET & ADDRESS */

11
src/device/device_default.cpp
View file

@ -81,6 +81,17 @@ namespace hw {
dfns();
}
/* ======================================================================= */
/* LOCKER */
/* ======================================================================= */
void device_default::lock() { }
bool device_default::try_lock() { return true; }
void device_default::unlock() { }
/* ======================================================================= */
/* WALLET & ADDRESS */
/* ======================================================================= */

7
src/device/device_default.hpp
View file

@ -59,6 +59,13 @@ namespace hw {
bool connect(void) override;
bool disconnect() override;
/* ======================================================================= */
/* LOCKER */
/* ======================================================================= */
void lock(void) override;
void unlock(void) override;
bool try_lock(void) override;
/* ======================================================================= */
/* WALLET & ADDRESS */
/* ======================================================================= */

528
src/device/device_ledger.cpp
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File diff suppressed because it is too large Load diff

21
src/device/device_ledger.hpp
View file

@ -36,7 +36,8 @@
#include "device.hpp"
#include <PCSC/winscard.h>
#include <PCSC/wintypes.h>
#include <boost/thread/mutex.hpp>
#include <boost/thread/recursive_mutex.hpp>
namespace hw {
@ -80,13 +81,11 @@ namespace hw {
class device_ledger : public hw::device {
private:
mutable std::mutex device_locker;
mutable std::mutex tx_locker;
void lock_device() ;
void unlock_device() ;
void lock_tx() ;
void unlock_tx() ;
// Locker for concurrent access
mutable boost::recursive_mutex device_locker;
mutable boost::mutex command_locker;
//PCSC management
std::string full_name;
SCARDCONTEXT hContext;
SCARDHANDLE hCard;
@ -130,6 +129,14 @@ namespace hw {
bool connect(void) override;
bool disconnect() override;
/* ======================================================================= */
/* LOCKER */
/* ======================================================================= */
void lock(void) override;
void unlock(void) override;
bool try_lock(void) override;
/* ======================================================================= */
/* WALLET & ADDRESS */
/* ======================================================================= */