From eafaeb9398216dacb92de69683ccdda6007efb1d Mon Sep 17 00:00:00 2001 From: patacongo Date: Sun, 20 Mar 2011 18:18:19 +0000 Subject: Move nuttx/examples to apps/examples git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3405 42af7a65-404d-4744-a932-0658087f49c3 --- apps/examples/nxflat/tests/hello++/Makefile | 180 ++++++++++++++++++++++++ apps/examples/nxflat/tests/hello++/hello++1.cpp | 60 ++++++++ apps/examples/nxflat/tests/hello++/hello++2.cpp | 123 ++++++++++++++++ apps/examples/nxflat/tests/hello++/hello++3.cpp | 132 +++++++++++++++++ apps/examples/nxflat/tests/hello++/hello++4.cpp | 150 ++++++++++++++++++++ 5 files changed, 645 insertions(+) create mode 100644 apps/examples/nxflat/tests/hello++/Makefile create mode 100644 apps/examples/nxflat/tests/hello++/hello++1.cpp create mode 100644 apps/examples/nxflat/tests/hello++/hello++2.cpp create mode 100644 apps/examples/nxflat/tests/hello++/hello++3.cpp create mode 100644 apps/examples/nxflat/tests/hello++/hello++4.cpp (limited to 'apps/examples/nxflat/tests/hello++') diff --git a/apps/examples/nxflat/tests/hello++/Makefile b/apps/examples/nxflat/tests/hello++/Makefile new file mode 100644 index 000000000..113520da5 --- /dev/null +++ b/apps/examples/nxflat/tests/hello++/Makefile @@ -0,0 +1,180 @@ +############################################################################ +# examples/nxflat/tests/hello/Makefile +# +# Copyright (C) 2009 Gregory Nutt. All rights reserved. +# Author: Gregory Nutt +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions +# are met: +# +# 1. Redistributions of source code must retain the above copyright +# notice, this list of conditions and the following disclaimer. +# 2. Redistributions in binary form must reproduce the above copyright +# notice, this list of conditions and the following disclaimer in +# the documentation and/or other materials provided with the +# distribution. +# 3. Neither the name NuttX nor the names of its contributors may be +# used to endorse or promote products derived from this software +# without specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED +# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. +# +############################################################################ + +-include $(TOPDIR)/.config # Current configuration +-include $(TOPDIR)/Make.defs # Basic make info + +BIN1 = hello++1 +BIN2 = hello++2 +BIN3 = hello++3 +#BIN4 = hello++4 +ALL_BIN = $(BIN1) $(BIN2) $(BIN3) $(BIN4) + +R1SRCS1 = $(BIN1).c +R1OBJS1 = $(R1SRCS1:.c=.o) +R2SRC1 = $(BIN1)-thunk.S +R2OBJ1 = $(R2SRC1:.S=.o) + +R1SRCS2 = $(BIN2).c +R1OBJS2 = $(R1SRCS2:.c=.o) +R2SRC2 = $(BIN2)-thunk.S +R2OBJ2 = $(R2SRC2:.S=.o) + +R1SRCS3 = $(BIN3).c +R1OBJS3 = $(R1SRCS3:.c=.o) +R2SRC3 = $(BIN3)-thunk.S +R2OBJ3 = $(R2SRC3:.S=.o) + +#R1SRCS4 = $(BIN4).c +#R1OBJS4 = $(R1SRCS4:.c=.o) +#R2SRC4 = $(BIN4)-thunk.S +#R2OBJ4 = $(R2SRC4:.S=.o) + +DERIVED = $(R2SRC1) $(R2SRC2) $(R2SRC3) $(R2SRC4) + +R1CXXOBJS = $(R1OBJS1) $(R1OBJS2) $(R1OBJS3) # $(R1OBJS4) +R2AOBJS = $(R2OBJ1) $(R2OBJ2) $(R2OBJ3) # $(R2OBJ4) + +LIBSTDC_STUBS_DIR = $(TOPDIR)/libxx +LIBSTDC_STUBS_LIB = $(LIBSTDC_STUBS_DIR)/liblibxx.a + +all: $(BIN1) $(BIN2) $(BIN3) # $(BIN4) + +$(R1CXXOBJS): %.o: %.cpp + @echo "CC: $<" + @$(CXX) -c $(CXXPICFLAGS) $< -o $@ + +$(R2AOBJS): %.o: %.S + @echo "AS: $<" + @$(CC) -c $(CPICFLAGS) $< -o $@ + +# This contains libstdc++ stubs to that you can build C++ code +# without actually having libstdc++ + +$(LIBSTDC_STUBS_LIB): + @$(MAKE) -C $(LIBSTDC_STUBS_DIR) TOPDIR=$(TOPDIR) + +# BIN1 and BIN2 link just like C code because they contain no +# static constructors. BIN1 is equivalent to a C hello world; +# BIN2 contains a class that implements hello world, but it is +# not statically initialized. + +$(BIN1).r1: $(R1OBJS1) + @echo "LD: $<" + @$(LD) $(NXFLATLDFLAGS1) -o $@ $^ + +$(R2SRC1): $(BIN1).r1 + @echo "MK: $<" + @$(MKNXFLAT) -o $@ $^ + +$(BIN1).r2: $(R2OBJ1) + @echo "LD: $<" + @$(LD) $(NXFLATLDFLAGS2) -o $@ $(R1OBJS1) $(R2OBJ1) + +$(BIN1): $(BIN1).r2 + @echo "LD: $<" + @$(LDNXFLAT) $(LDNXFLATFLAGS) -o $@ $^ + +$(BIN2).r1: $(R1OBJS2) $(LIBSTDC_STUBS_LIB) + @echo "LD: $<" + @$(LD) $(NXFLATLDFLAGS1) -o $@ $^ + +$(R2SRC2): $(BIN2).r1 + @echo "MK: $<" + @$(MKNXFLAT) -o $@ $^ + +$(BIN2).r2: $(R2OBJ2) + @$(LD) $(NXFLATLDFLAGS2) -o $@ $(R1OBJS2) $(R2OBJ2) + +$(BIN2): $(BIN2).r2 + @echo "LD: $<" + @$(LDNXFLAT) $(LDNXFLATFLAGS) -o $@ $^ + +# BIN3 and BIN4 require that we include --cxx in the xflat-ld command. +# This will instruct xflat-ld that we want it to put together the correct +# startup files to handle the C++ static initializers. +# +# BIN3 is equivalent to BIN2 except that is uses static initializers + +$(BIN3).r1: $(R1OBJS3) $(LIBSTDC_STUBS_LIB) + @echo "LD: $<" + @$(LD) $(NXFLATLDFLAGS1) -o $@ $^ + +$(R2SRC3): $(BIN3).r1 + @echo "MK: $<" + @$(MKNXFLAT) -o $@ $^ + +$(BIN3).r2: $(R2OBJ3) + @echo "LD: $<" + @$(LD) $(NXFLATLDFLAGS2) -o $@ $(R1OBJS3) $(R2OBJ3) + +$(BIN3): $(BIN3).r2 + @echo "LD: $<" + @$(LDNXFLAT) $(LDNXFLATFLAGS) -o $@ $^ + +# BIN4 is similar to BIN3 except that it uses the streams code from libstdc++ +# +# NOTE: libstdc++ is not available for XFLAT as of this writing +# +#$(BIN4).r1: $(R1OBJS4) $(LIBSTDC_STUBS_LIB) +# @echo "LD: $<" +# $(LD) $(NXFLATLDFLAGS1) -o $@ $^ +# +#$(R2SRC4): $(BIN4).r1 +# @echo "MK: $<" +# $(MKNXFLAT) -o $@ $^ +# +#$(BIN4).r2: $(R2OBJ4)# @echo "LD: $<" +# $(LD) $(NXFLATLDFLAGS2) -o $@ $(R1OBJS4) $(R2OBJ4) +# +#$(BIN4): $(BIN4).r2 +# @echo "LD: $<" +# $(LDNXFLAT) $(LDNXFLATFLAGS) -o $@ $^ + +clean: + @rm -f $(ALL_BIN) $(DERIVED) *.o *.r1 *.r2 *~ .*.swp core + +install: $(ALL_BIN) + @install -D $(BIN1) $(ROMFS_DIR)/$(BIN1) + @install -D $(BIN2) $(ROMFS_DIR)/$(BIN2) + @install -D $(BIN3) $(ROMFS_DIR)/$(BIN3) +# @install -D $(BIN4) $(ROMFS_DIR)/$(BIN4) + + + + + + + diff --git a/apps/examples/nxflat/tests/hello++/hello++1.cpp b/apps/examples/nxflat/tests/hello++/hello++1.cpp new file mode 100644 index 000000000..779f3307a --- /dev/null +++ b/apps/examples/nxflat/tests/hello++/hello++1.cpp @@ -0,0 +1,60 @@ +///////////////////////////////////////////////////////////////////////////// +// examples/nxflat/tests/hello++/hello++1.c +// +// Copyright (C) 2009 Gregory Nutt. All rights reserved. +// Author: Gregory Nutt +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions +// are met: +// +// 1. Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// 2. Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in +// the documentation and/or other materials provided with the +// distribution. +// 3. Neither the name NuttX nor the names of its contributors may be +// used to endorse or promote products derived from this software +// without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +// OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED +// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +// POSSIBILITY OF SUCH DAMAGE. +// +///////////////////////////////////////////////////////////////////////////// +// +// This is an trivial version of "Hello, World" program. It illustrates +// that we can build C programs using the C++ compiler. +// +// - Building a C++ program to use the C library +// - No class creation +// - NO Streams +// - NO Static constructor and destructors +// +///////////////////////////////////////////////////////////////////////////// + +///////////////////////////////////////////////////////////////////////////// +// Included Files +///////////////////////////////////////////////////////////////////////////// + +#include + +///////////////////////////////////////////////////////////////////////////// +// Public Functions +///////////////////////////////////////////////////////////////////////////// + +int main(int argc, char **argv) +{ + printf("Hello, World!\n"); + return 0; +} diff --git a/apps/examples/nxflat/tests/hello++/hello++2.cpp b/apps/examples/nxflat/tests/hello++/hello++2.cpp new file mode 100644 index 000000000..87166f3ab --- /dev/null +++ b/apps/examples/nxflat/tests/hello++/hello++2.cpp @@ -0,0 +1,123 @@ +///////////////////////////////////////////////////////////////////////////// +// examples/nxflat/tests/hello++/hello++2.c +// +// Copyright (C) 2009 Gregory Nutt. All rights reserved. +// Author: Gregory Nutt +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions +// are met: +// +// 1. Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// 2. Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in +// the documentation and/or other materials provided with the +// distribution. +// 3. Neither the name NuttX nor the names of its contributors may be +// used to endorse or promote products derived from this software +// without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +// OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED +// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +// POSSIBILITY OF SUCH DAMAGE. +// +///////////////////////////////////////////////////////////////////////////// +// +// This is an another trivial version of "Hello, World" design. It illustrates +// +// - Building a C++ program to use the C library +// - Basic class creation +// - NO Streams +// - NO Static constructor and destructors +// +///////////////////////////////////////////////////////////////////////////// + +///////////////////////////////////////////////////////////////////////////// +// Included Files +///////////////////////////////////////////////////////////////////////////// + +#include + +///////////////////////////////////////////////////////////////////////////// +// Classes +///////////////////////////////////////////////////////////////////////////// + +class CThingSayer +{ + const char *szWhatToSay; +public: + CThingSayer(void) + { + printf("CThingSayer::CThingSayer: I am!\n"); + szWhatToSay = (const char*)NULL; + } + + ~CThingSayer(void) + { + printf("CThingSayer::~CThingSayer: I cease to be\n"); + if (szWhatToSay) + { + printf("CThingSayer::~CThingSayer: I will never say '%s' again\n", + szWhatToSay); + } + szWhatToSay = (const char*)NULL; + } + + void Initialize(const char *czSayThis) + { + printf("CThingSayer::Initialize: When told, I will say '%s'\n", + czSayThis); + szWhatToSay = czSayThis; + } + + void SayThing(void) + { + printf("CThingSayer::SayThing: I am now saying '%s'\n", szWhatToSay); + } +}; + +///////////////////////////////////////////////////////////////////////////// +// Public Functions +///////////////////////////////////////////////////////////////////////////// + +int main(int argc, char **argv) +{ + CThingSayer *MyThingSayer; + + printf("main: Started. Creating MyThingSayer\n"); + + // Create an instance of the CThingSayer class + // We should see the message from constructor, CThingSayer::CThingSayer(), + + MyThingSayer = new CThingSayer; + printf("main: Created MyThingSayer=0x%08lx\n", (long)MyThingSayer); + + // Tell MyThingSayer that "Hello, World!" is the string to be said + + printf("main: Calling MyThingSayer->Initialize\n");; + MyThingSayer->Initialize("Hello, World!"); + + // Tell MyThingSayer to say the thing we told it to say + + printf("main: Calling MyThingSayer->SayThing\n");; + MyThingSayer->SayThing(); + + // We should see the message from the destructor, + // CThingSayer::~CThingSayer(), AFTER we see the following + + printf("main: Destroying MyThingSayer\n"); + delete MyThingSayer; + + printf("main: Returning\n");; + return 0; +} diff --git a/apps/examples/nxflat/tests/hello++/hello++3.cpp b/apps/examples/nxflat/tests/hello++/hello++3.cpp new file mode 100644 index 000000000..ed7302fa6 --- /dev/null +++ b/apps/examples/nxflat/tests/hello++/hello++3.cpp @@ -0,0 +1,132 @@ +///////////////////////////////////////////////////////////////////////////// +// examples/nxflat/tests/hello++/hello++3.c +// +// Copyright (C) 2009 Gregory Nutt. All rights reserved. +// Author: Gregory Nutt +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions +// are met: +// +// 1. Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// 2. Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in +// the documentation and/or other materials provided with the +// distribution. +// 3. Neither the name NuttX nor the names of its contributors may be +// used to endorse or promote products derived from this software +// without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +// OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED +// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +// POSSIBILITY OF SUCH DAMAGE. +// +///////////////////////////////////////////////////////////////////////////// +// +// This is an another trivial version of "Hello, World" design. It illustrates +// +// - Building a C++ program to use the C library and stdio +// - Basic class creation with virtual methods. +// - Static constructor and destructors (in main program only) +// - NO Streams +// +///////////////////////////////////////////////////////////////////////////// + +///////////////////////////////////////////////////////////////////////////// +// Included Files +///////////////////////////////////////////////////////////////////////////// + +#include + +///////////////////////////////////////////////////////////////////////////// +// Classes +///////////////////////////////////////////////////////////////////////////// + +class CThingSayer +{ + const char *szWhatToSay; +public: + CThingSayer(void); + virtual ~CThingSayer(void); + virtual void Initialize(const char *czSayThis); + virtual void SayThing(void); +}; + +// A static instance of the CThingSayer class. This instance MUST +// be constructed by the system BEFORE the program is started at +// main() and must be destructed by the system AFTER the main() +// returns to the system + +static CThingSayer MyThingSayer; + +// These are implementations of the methods of the CThingSayer class + +CThingSayer::CThingSayer(void) +{ + printf("CThingSayer::CThingSayer: I am!\n"); + szWhatToSay = (const char*)NULL; +} + +CThingSayer::~CThingSayer(void) +{ + printf("CThingSayer::~CThingSayer: I cease to be\n"); + if (szWhatToSay) + { + printf("CThingSayer::~CThingSayer: I will never say '%s' again\n", + szWhatToSay); + } + szWhatToSay = (const char*)NULL; +} + +void CThingSayer::Initialize(const char *czSayThis) +{ + printf("CThingSayer::Initialize: When told, I will say '%s'\n", + czSayThis); + szWhatToSay = czSayThis; +} + +void CThingSayer::SayThing(void) +{ + printf("CThingSayer::SayThing: I am now saying '%s'\n", szWhatToSay); +} + +///////////////////////////////////////////////////////////////////////////// +// Public Functions +///////////////////////////////////////////////////////////////////////////// + +int main(int argc, char **argv) +{ + // We should see the message from constructor, CThingSayer::CThingSayer(), + // BEFORE we see the following messages. That is proof that the + // C++ static initializer is working + + printf("main: Started. MyThingSayer should already exist\n"); + + // Tell MyThingSayer that "Hello, World!" is the string to be said + + printf("main: Calling MyThingSayer.Initialize\n");; + MyThingSayer.Initialize("Hello, World!"); + + // Tell MyThingSayer to say the thing we told it to say + + printf("main: Calling MyThingSayer.SayThing\n");; + MyThingSayer.SayThing(); + + // We are finished, return. We should see the message from the + // destructor, CThingSayer::~CThingSayer(), AFTER we see the following + // message. That is proof that the C++ static destructor logic + // is working + + printf("main: Returning. MyThingSayer should be destroyed\n");; + return 0; +} diff --git a/apps/examples/nxflat/tests/hello++/hello++4.cpp b/apps/examples/nxflat/tests/hello++/hello++4.cpp new file mode 100644 index 000000000..97d026093 --- /dev/null +++ b/apps/examples/nxflat/tests/hello++/hello++4.cpp @@ -0,0 +1,150 @@ +///////////////////////////////////////////////////////////////////////////// +// examples/nxflat/tests/hello++/hello++4.c +// +// Copyright (C) 2009 Gregory Nutt. All rights reserved. +// Author: Gregory Nutt +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions +// are met: +// +// 1. Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// 2. Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in +// the documentation and/or other materials provided with the +// distribution. +// 3. Neither the name NuttX nor the names of its contributors may be +// used to endorse or promote products derived from this software +// without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE +// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, +// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, +// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS +// OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED +// AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +// POSSIBILITY OF SUCH DAMAGE. +// +///////////////////////////////////////////////////////////////////////////// +// +// This is an excessively complex version of "Hello, World" design to +// illustrate some basic properties of C++: +// +// - Building a C++ program +// - Streams / statically linked libstdc++ +// - Static constructor and destructors (in main program only) +// +///////////////////////////////////////////////////////////////////////////// + +///////////////////////////////////////////////////////////////////////////// +// Included Files +///////////////////////////////////////////////////////////////////////////// + +#include +#include + +#ifndef NULL +# define NULL ((void*)0L) +#endif + +///////////////////////////////////////////////////////////////////////////// +// Classes +///////////////////////////////////////////////////////////////////////////// + +using namespace std; + +// A hello world sayer class + +class CThingSayer +{ + const char *szWhatToSay; +public: + CThingSayer(void); + virtual ~CThingSayer(void); + virtual void Initialize(const char *czSayThis); + virtual void SayThing(void); +}; + +///////////////////////////////////////////////////////////////////////////// +// Private Data +///////////////////////////////////////////////////////////////////////////// + +// A static instance of the CThingSayer class. This instance MUST +// be constructed by the system BEFORE the program is started at +// main() and must be destructed by the system AFTER the main() +// returns to the system + +static CThingSayer MyThingSayer; + +///////////////////////////////////////////////////////////////////////////// +// Method Implementations +///////////////////////////////////////////////////////////////////////////// + +// These are implementations of the methods of the CThingSayer class + +CThingSayer::CThingSayer(void) +{ + cout << "CThingSayer::CThingSayer: I am!" << endl; + szWhatToSay = (const char*)NULL; +} + +CThingSayer::~CThingSayer(void) +{ + cout << "CThingSayer::~CThingSayer: I cease to be" << endl; + if (szWhatToSay) + { + cout << "CThingSayer::~CThingSayer: I will never say '" + << szWhatToSay << "' again" << endl; + } + szWhatToSay = (const char*)NULL; +} + +void CThingSayer::Initialize(const char *czSayThis) +{ + cout << "CThingSayer::Initialize: When told, I will say '" + << czSayThis << "'" << endl; + szWhatToSay = czSayThis; +} + +void CThingSayer::SayThing(void) +{ + cout << "CThingSayer::SayThing: I am now saying '" + << szWhatToSay << "'" << endl; +} + +///////////////////////////////////////////////////////////////////////////// +// Public Functions +///////////////////////////////////////////////////////////////////////////// + +int main(int argc, char **argv) +{ + // We should see the message from constructor, CThingSayer::CThingSayer(), + // BEFORE we see the following messages. That is proof that the + // C++ static initializer is working + + cout << "main: Started" << endl; + + // Tell MyThingSayer that "Hello, World!" is the string to be said + + cout << "main: Calling MyThingSayer.Initialize" << endl; + MyThingSayer.Initialize("Hello, World!"); + + // Tell MyThingSayer to say the thing we told it to say + + cout << "main: Calling MyThingSayer.SayThing" << endl; + MyThingSayer.SayThing(); + + // We are finished, return. We should see the message from the + // destructor, CThingSayer::~CThingSayer(), AFTER we see the following + // message. That is proof that the C++ static destructor logic + // is working + + cout << "main: Returning" << endl; + return 0; +} -- cgit v1.2.3