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Diffstat (limited to 'dep/acelite/ace/UUID.cpp')
| -rw-r--r-- | dep/acelite/ace/UUID.cpp | 506 |
1 files changed, 506 insertions, 0 deletions
diff --git a/dep/acelite/ace/UUID.cpp b/dep/acelite/ace/UUID.cpp new file mode 100644 index 00000000000..800469481e7 --- /dev/null +++ b/dep/acelite/ace/UUID.cpp @@ -0,0 +1,506 @@ +//$Id: UUID.cpp 88515 2010-01-13 08:47:38Z johnnyw $ + +#include "ace/UUID.h" +#include "ace/Guard_T.h" + +#if !defined (__ACE_INLINE__) +#include "ace/UUID.inl" +#endif /* __ACE_INLINE__ */ + +#include "ace/Log_Msg.h" +#include "ace/OS_NS_stdio.h" +#include "ace/OS_NS_string.h" +#include "ace/OS_NS_sys_time.h" +#include "ace/OS_NS_netdb.h" +#include "ace/OS_NS_unistd.h" +#include "ace/ACE.h" + +ACE_RCSID (ace, + UUID, + "$Id: UUID.cpp 88515 2010-01-13 08:47:38Z johnnyw $") + + +ACE_BEGIN_VERSIONED_NAMESPACE_DECL + +namespace ACE_Utils +{ + // NIL version of the UUID + const UUID UUID::NIL_UUID; + + UUID::UUID (const ACE_CString& uuid_string) + { + this->init (); + this->from_string_i (uuid_string); + } + + const UUID & + UUID::operator = (const UUID & rhs) + { + if (this != &rhs) + { + // Reset the string version of the UUID a string version + // exist, and the UUID is not equal to the old UUID. + if (0 != this->as_string_.get ()) + { + if (0 == rhs.as_string_.get () || *this != rhs) + this->as_string_.reset (); + } + + // Copy the contents of the UUID. + ACE_OS::memcpy (&this->uuid_, &rhs.uuid_, BINARY_SIZE); + + /// @todo We should create an UUID_Ex class for UUIDs that + /// contain the thread id and process id. + this->thr_id_ = rhs.thr_id_; + this->pid_ = rhs.pid_; + } + + return *this; + } + + const ACE_CString * UUID::to_string (void) const + { + // Compute the string representation only once. + if (0 != this->as_string_.get ()) + return this->as_string_.get (); + + // Get a buffer exactly the correct size. Use the nil UUID as a + // gauge. Don't forget the trailing nul. + ACE_Auto_Array_Ptr <char> auto_clean; + size_t UUID_STRING_LENGTH = 36 + thr_id_.length () + pid_.length (); + char *buf = 0; + + if (36 == UUID_STRING_LENGTH) + { + ACE_NEW_RETURN (buf, + char[UUID_STRING_LENGTH + 1], + 0); + + // Let the auto array pointer manage the buffer. + auto_clean.reset (buf); + + ACE_OS::sprintf (buf, + "%8.8x-%4.4x-%4.4x-%2.2x%2.2x-%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x", + this->uuid_.time_low_, + this->uuid_.time_mid_, + this->uuid_.time_hi_and_version_, + this->uuid_.clock_seq_hi_and_reserved_, + this->uuid_.clock_seq_low_, + (this->uuid_.node_.node_ID ()) [0], + (this->uuid_.node_.node_ID ()) [1], + (this->uuid_.node_.node_ID ()) [2], + (this->uuid_.node_.node_ID ()) [3], + (this->uuid_.node_.node_ID ()) [4], + (this->uuid_.node_.node_ID ()) [5]); + } + else + { + UUID_STRING_LENGTH += 2; //for '-' + ACE_NEW_RETURN (buf, + char[UUID_STRING_LENGTH + 1], + 0); + + // Let the auto array pointer manage the buffer. + auto_clean.reset (buf); + + ACE_OS::sprintf (buf, + "%8.8x-%4.4x-%4.4x-%2.2x%2.2x-%2.2x%2.2x%2.2x%2.2x%2.2x%2.2x-%s-%s", + this->uuid_.time_low_, + this->uuid_.time_mid_, + this->uuid_.time_hi_and_version_, + this->uuid_.clock_seq_hi_and_reserved_, + this->uuid_.clock_seq_low_, + (this->uuid_.node_.node_ID ()) [0], + (this->uuid_.node_.node_ID ()) [1], + (this->uuid_.node_.node_ID ()) [2], + (this->uuid_.node_.node_ID ()) [3], + (this->uuid_.node_.node_ID ()) [4], + (this->uuid_.node_.node_ID ()) [5], + thr_id_.c_str (), + pid_.c_str ()); + } + + // Save the string. + ACE_CString * as_string = 0; + + ACE_NEW_RETURN (as_string, + ACE_CString (buf, UUID_STRING_LENGTH), + 0); + + this->as_string_.reset (as_string); + return this->as_string_.get (); + } + + void + UUID::from_string_i (const ACE_CString& uuid_string) + { + if (uuid_string.length () < NIL_UUID.to_string ()->length ()) + { + ACE_ERROR ((LM_ERROR, + "%N ACE_UUID::from_string_i - " + "IllegalArgument (incorrect string length)\n")); + return; + } + + /// Special case for the nil UUID. + if (uuid_string == *NIL_UUID.to_string ()) + { + *this = NIL_UUID; + return; + } + + unsigned int time_low; + unsigned int time_mid; + unsigned int time_hi_and_version; + unsigned int clock_seq_hi_and_reserved; + unsigned int clock_seq_low; + unsigned int node [UUID_Node::NODE_ID_SIZE]; + char thr_pid_buf [BUFSIZ]; + + if (uuid_string.length () == NIL_UUID.to_string ()->length ()) + { + // This might seem quite strange this being in ACE, but it + // seems to be a bit difficult to write a facade for ::sscanf + // because some compilers dont support vsscanf, including + // MSVC. It appears that most platforms support sscanf though + // so we need to use it directly. + const int nScanned = +#if defined (ACE_HAS_TR24731_2005_CRT) + sscanf_s ( +#else + ::sscanf ( +#endif /* ACE_HAS_TR24731_2005_CRT */ + uuid_string.c_str (), + "%8x-%4x-%4x-%2x%2x-%2x%2x%2x%2x%2x%2x", + &time_low, + &time_mid, + &time_hi_and_version, + &clock_seq_hi_and_reserved, + &clock_seq_low, + &node[0], + &node[1], + &node[2], + &node[3], + &node[4], + &node[5] + ); + + if (nScanned != 11) + { + ACE_DEBUG ((LM_DEBUG, + "UUID::from_string_i - " + "IllegalArgument (invalid string representation)\n")); + return; + } + } + else + { + const int nScanned = +#if defined (ACE_HAS_TR24731_2005_CRT) + sscanf_s (uuid_string.c_str (), + "%8x-%4x-%4x-%2x%2x-%2x%2x%2x%2x%2x%2x-%s", + &time_low, + &time_mid, + &time_hi_and_version, + &clock_seq_hi_and_reserved, + &clock_seq_low, + &node[0], + &node[1], + &node[2], + &node[3], + &node[4], + &node[5], + thr_pid_buf, + BUFSIZ + ); +#else + ::sscanf (uuid_string.c_str (), + "%8x-%4x-%4x-%2x%2x-%2x%2x%2x%2x%2x%2x-%s", + &time_low, + &time_mid, + &time_hi_and_version, + &clock_seq_hi_and_reserved, + &clock_seq_low, + &node[0], + &node[1], + &node[2], + &node[3], + &node[4], + &node[5], + thr_pid_buf + ); +#endif /* ACE_HAS_TR24731_2005_CRT */ + + if (nScanned != 12) + { + ACE_DEBUG ((LM_DEBUG, + "ACE_UUID::from_string_i - " + "IllegalArgument (invalid string representation)\n")); + return; + } + } + + this->uuid_.time_low_ = static_cast<ACE_UINT32> (time_low); + this->uuid_.time_mid_ = static_cast<ACE_UINT16> (time_mid); + this->uuid_.time_hi_and_version_ = static_cast<ACE_UINT16> (time_hi_and_version); + this->uuid_.clock_seq_hi_and_reserved_ = static_cast<u_char> (clock_seq_hi_and_reserved); + this->uuid_.clock_seq_low_ = static_cast<u_char> (clock_seq_low); + + for (size_t i = 0; i < UUID_Node::NODE_ID_SIZE; ++ i) + this->uuid_.node_.node_ID ()[i] = static_cast <u_char> (node[i]); + + // Support varient 10- only + if ((this->uuid_.clock_seq_hi_and_reserved_ & 0xc0) != 0x80 && + (this->uuid_.clock_seq_hi_and_reserved_ & 0xc0) != 0xc0) + { + ACE_DEBUG ((LM_DEBUG, + "ACE_UUID::from_string_i - " + "IllegalArgument (unsupported variant)\n")); + return; + } + + /// Support versions 1, 3, and 4 only + ACE_UINT16 V1 = this->uuid_.time_hi_and_version_; + + if ((V1 & 0xF000) != 0x1000 && + (V1 & 0xF000) != 0x3000 && + (V1 & 0xF000) != 0x4000) + { + ACE_DEBUG ((LM_DEBUG, + "ACE_UUID::from_string_i - " + "IllegalArgument (unsupported version)\n")); + return; + } + + if ((this->uuid_.clock_seq_hi_and_reserved_ & 0xc0) == 0xc0) + { + if (uuid_string.length () == NIL_UUID.to_string ()->length ()) + { + ACE_DEBUG ((LM_DEBUG, + "ACE_UUID::from_string_i - " + "IllegalArgument (Missing Thread and Process Id)\n")); + return; + } + ACE_CString thr_pid_str (thr_pid_buf); + ssize_t pos = static_cast<ssize_t> (thr_pid_str.find ('-')); + if (pos == -1) + ACE_DEBUG ((LM_DEBUG, + "ACE_UUID::from_string_i - " + "IllegalArgument (Thread and Process Id format incorrect)\n")); + + this->thr_id_ = thr_pid_str.substr (0, pos); + this->pid_ = thr_pid_str.substr (pos+1, thr_pid_str.length ()-pos-1); + } + } + + UUID_Generator::UUID_Generator (void) + : time_last_ (0), + destroy_lock_ (true), + is_init_ (false) + { + ACE_NEW (lock_, ACE_SYNCH_MUTEX); + this->init (); + } + + UUID_Generator::~UUID_Generator (void) + { + if (destroy_lock_) + delete lock_; + } + + void + UUID_Generator::init (void) + { + if (this->is_init_) + return; + + ACE_OS::macaddr_node_t macaddress; + int const result = ACE_OS::getmacaddress (&macaddress); + + UUID_Node::Node_ID node_id; + + if (-1 != result) + { + ACE_OS::memcpy (node_id, + macaddress.node, + UUID_Node::NODE_ID_SIZE); + } + else + { + node_id [0] = static_cast<u_char> (ACE_OS::rand ()); + node_id [1] = static_cast<u_char> (ACE_OS::rand ()); + node_id [2] = static_cast<u_char> (ACE_OS::rand ()); + node_id [3] = static_cast<u_char> (ACE_OS::rand ()); + node_id [4] = static_cast<u_char> (ACE_OS::rand ()); + node_id [5] = static_cast<u_char> (ACE_OS::rand ()); + } + + this->get_timestamp (time_last_); + + { + ACE_GUARD (ACE_SYNCH_MUTEX, ace_mon, *lock_); + uuid_state_.timestamp = time_last_; + + ACE_OS::memcpy (uuid_state_.node.node_ID (), + node_id, + UUID_Node::NODE_ID_SIZE); + } + + this->is_init_ = true; + } + + void + UUID_Generator:: + generate_UUID (UUID& uuid, ACE_UINT16 version, u_char variant) + { + UUID_Time timestamp; + ACE_UINT16 clock_sequence; + + this->get_timestamp_and_clocksequence (timestamp, + clock_sequence); + + // Construct a Version 1 UUID with the information in the arguements. + uuid.time_low (static_cast<ACE_UINT32> (timestamp & 0xFFFFFFFF)); + uuid.time_mid (static_cast<ACE_UINT16> ((timestamp >> 32) & 0xFFFF)); + + ACE_UINT16 tHAV = static_cast<ACE_UINT16> ((timestamp >> 48) & 0xFFFF); + tHAV |= (version << 12); + uuid.time_hi_and_version (tHAV); + + u_char cseqHAV; + uuid.clock_seq_low (static_cast<u_char> (clock_sequence & 0xFF)); + cseqHAV = static_cast<u_char> ((clock_sequence & 0x3f00) >> 8); + uuid_state_.timestamp = timestamp; + + cseqHAV |= variant; + uuid.clock_seq_hi_and_reserved (cseqHAV); + uuid.node (uuid_state_.node); + + if (variant == 0xc0) + { + ACE_Thread_ID thread_id; + char buf [BUFSIZ]; + thread_id.to_string (buf); + uuid.thr_id (buf); + + ACE_OS::sprintf (buf, + "%d", + static_cast<int> (ACE_OS::getpid ())); + uuid.pid (buf); + } + } + + UUID* + UUID_Generator::generate_UUID (ACE_UINT16 version, u_char variant) + { + UUID* uuid = 0; + ACE_NEW_RETURN (uuid, + UUID, + 0); + + this->generate_UUID (*uuid, version, variant); + return uuid; + } + + /// Obtain a new timestamp. If UUID's are being generated too quickly + /// the clock sequence will be incremented + void + UUID_Generator::get_timestamp (UUID_Time& timestamp) + { + ACE_GUARD (ACE_SYNCH_MUTEX, mon, *lock_); + + this->get_systemtime (timestamp); + + // Account for the clock being set back. Increment the clock / + // sequence. + if (timestamp <= time_last_) + { + uuid_state_.clock_sequence = static_cast<ACE_UINT16> + ((uuid_state_.clock_sequence + 1) & ACE_UUID_CLOCK_SEQ_MASK); + } + // If the system time ticked since the last UUID was + // generated. Set / the clock sequence back. + else if (timestamp > time_last_) + { + uuid_state_.clock_sequence = 0; + } + + time_last_ = timestamp; + } + + void + UUID_Generator::get_timestamp_and_clocksequence (UUID_Time& timestamp, + ACE_UINT16& clock_sequence) + { + ACE_GUARD (ACE_SYNCH_MUTEX, mon, *lock_); + + this->get_systemtime (timestamp); + + // Account for the clock being set back. Increment the clock / + // sequence. + if (timestamp <= time_last_) + uuid_state_.clock_sequence = static_cast<ACE_UINT16> ((uuid_state_.clock_sequence + 1) & ACE_UUID_CLOCK_SEQ_MASK); + + // If the system time ticked since the last UUID was + // generated. Set / the clock sequence back. + else if (timestamp > time_last_) + uuid_state_.clock_sequence = 0; + + time_last_ = timestamp; + clock_sequence = uuid_state_.clock_sequence; + } + + /** + * ACE_Time_Value is in POSIX time, seconds since Jan 1, 1970. UUIDs use + * time in 100ns ticks since 15 October 1582. The difference is: + * 15 Oct 1582 - 1 Jan 1600: 17 days in Oct, 30 in Nov, 31 in Dec + + * 17 years and 4 leap days (1584, 88, 92 and 96) + * 1 Jan 1600 - 1 Jan 1900: 3 centuries + 73 leap days ( 25 in 17th cent. + * and 24 each in 18th and 19th centuries) + * 1 Jan 1900 - 1 Jan 1970: 70 years + 17 leap days. + * This adds up, in days: (17+30+31+365*17+4)+ (365*300+73)+ (365*70+17) or + * 122192928000000000U (0x1B21DD213814000) 100 ns ticks. + */ + void + UUID_Generator::get_systemtime (UUID_Time & timestamp) + { + const UUID_Time timeOffset = +#if defined (ACE_LACKS_UNSIGNEDLONGLONG_T) + ACE_U_LongLong (ACE_INT64_LITERAL (0x1B21DD213814000)); +#elif defined (ACE_LACKS_LONGLONG_T) + ACE_U_LongLong (0x13814000u, 0x1B21DD2u); +#else + ACE_UINT64_LITERAL (0x1B21DD213814000); +#endif /* ACE_LACKS_UNSIGNEDLONGLONG_T */ + + /// Get the time of day, convert to 100ns ticks then add the offset. + ACE_Time_Value now = ACE_OS::gettimeofday (); + ACE_UINT64 time; + now.to_usec (time); + time = time * 10; + timestamp = time + timeOffset; + } + + ACE_SYNCH_MUTEX* + UUID_Generator::lock (void) + { + return this->lock_; + } + + void + UUID_Generator::lock (ACE_SYNCH_MUTEX* lock, bool release_lock) + { + if (this->destroy_lock_) + delete this->lock_; + + this->lock_ = lock; + this->destroy_lock_ = release_lock; + } +} + +#if defined (ACE_HAS_EXPLICIT_STATIC_TEMPLATE_MEMBER_INSTANTIATION) + template ACE_Singleton <ACE_Utils::UUID_Generator, ACE_SYNCH_MUTEX> * + ACE_Singleton <ACE_Utils::UUID_Generator, ACE_SYNCH_MUTEX>::singleton_; +#endif /* ACE_HAS_EXPLICIT_STATIC_TEMPLATE_MEMBER_INSTANTIATION */ + +ACE_END_VERSIONED_NAMESPACE_DECL |