HP aC++/HP C A.06.28 Programmer's Guide Integrity servers (769150-001, March 2014)

Example....................................................................................................................149
typename Keyword..........................................................................................................149
Usage.......................................................................................................................149
Example....................................................................................................................149
Overloading new[] and delete[] for Arrays...............................................................................150
Example.........................................................................................................................151
Standard Exception Classes...................................................................................................152
Example.........................................................................................................................152
Exceptions Thrown by the Standard C++ Library.......................................................................153
type_info Class.....................................................................................................................153
Unsupported Functionality......................................................................................................154
7 Optimizing HP aC++ Programs................................................................156
Requesting Optimization........................................................................................................156
Setting Basic Optimization Levels.......................................................................................156
Level 1 Optimization....................................................................................................156
Level 2 Optimization....................................................................................................156
Level 3 Optimization....................................................................................................157
Level 4 Optimization....................................................................................................157
Additional Options for Finer Control...................................................................................157
Enabling Aggressive Optimizations................................................................................157
Enabling Only Conservative Optimizations.....................................................................158
Removing Compilation Time Limits When Optimizing.......................................................158
Limiting the Size of Optimized Code..............................................................................158
Combining Optimization Options..................................................................................158
Profile-Based Optimization................................................................................................158
Instrumentation...........................................................................................................159
Collecting Data for Profiling..........................................................................................159
Maintaining Profile Data Files.......................................................................................159
Example 1.................................................................................................................160
Example 2.................................................................................................................160
Performing Profile-Based Optimization............................................................................160
Pragmas That Control Optimization.........................................................................................160
8 Exception Handling................................................................................161
Exception Handling..............................................................................................................161
Exception Handling in C++...............................................................................................161
Exception Handling as Defined by the ANSI/ISO C++ International Standard.........................162
Basic Exception Handling Example....................................................................................162
Function Try Block Examples..............................................................................................162
Debugging Exception Handling.........................................................................................163
Performance Considerations..............................................................................................163
Using Threads......................................................................................................................163
Rogue Wave Standard C++ Library 2.2.1...........................................................................163
Rogue Wave Standard C++ Library 1.2.1 and Tools.h++ 7.0.6..............................................163
Using Locks.....................................................................................................................163
Required Command-line Options.......................................................................................164
Rogue Wave Standard C++ Library 2.2.1.......................................................................164
Rogue Wave Standard C++ Library 1.2.1 and Tools.h++ 7.0.6..........................................164
Limitations.......................................................................................................................165
Using -D_THREAD_SAFE with the cfront Compatible libstream...........................................165
Differences between Standard iostreams and cfront Compatible libstream...........................165
Using -D__HPACC_THREAD_SAFE_RB_TREE...................................................................165
Exception Handling..........................................................................................................166
Pthreads (POSIX Threads).......................................................................................................166
Limitations.......................................................................................................................166
12 Contents