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authorpatacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>2012-10-29 00:52:23 +0000
committerpatacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>2012-10-29 00:52:23 +0000
commitade5fb42679b7e890f29487ca850c65f9944fa1e (patch)
tree84f10662c214892091c5b7d5dce796b6f736c6b4 /apps/examples/elf
parent09dcebb6991350498b809a20b55fbcfd982a0b2a (diff)
downloadpx4-nuttx-ade5fb42679b7e890f29487ca850c65f9944fa1e.tar.gz
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Finish implemention of ELF loader static constructor support. Still some issues.
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5272 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'apps/examples/elf')
-rw-r--r--apps/examples/elf/tests/Makefile8
-rw-r--r--apps/examples/elf/tests/hello++/Makefile116
-rw-r--r--apps/examples/elf/tests/hello++/hello++1.cpp60
-rw-r--r--apps/examples/elf/tests/hello++/hello++2.cpp123
-rw-r--r--apps/examples/elf/tests/hello++/hello++3.cpp132
-rw-r--r--apps/examples/elf/tests/hello++/hello++4.cpp150
6 files changed, 5 insertions, 584 deletions
diff --git a/apps/examples/elf/tests/Makefile b/apps/examples/elf/tests/Makefile
index f834f6c78..d2192cb1e 100644
--- a/apps/examples/elf/tests/Makefile
+++ b/apps/examples/elf/tests/Makefile
@@ -33,13 +33,15 @@
#
############################################################################
-# Most of these do no build yet
+-include $(TOPDIR)/.config
+-include $(TOPDIR)/Make.defs
+include $(APPDIR)/Make.defs
-ALL_SUBDIRS = errno hello hello++ longjmp mutex pthread signal task struct
+ALL_SUBDIRS = errno hello helloxx longjmp mutex pthread signal task struct
BUILD_SUBDIRS = errno hello task struct
ifeq ($(CONFIG_HAVE_CXX),y)
-BUILD_SUBDIRS += hello++
+BUILD_SUBDIRS += helloxx
endif
ifeq ($(CONFIG_EXAMPLES_ELF_LONGJMP),y)
diff --git a/apps/examples/elf/tests/hello++/Makefile b/apps/examples/elf/tests/hello++/Makefile
deleted file mode 100644
index 9de52cfa1..000000000
--- a/apps/examples/elf/tests/hello++/Makefile
+++ /dev/null
@@ -1,116 +0,0 @@
-############################################################################
-# examples/elf/tests/hello/Makefile
-#
-# Copyright (C) 2012 Gregory Nutt. All rights reserved.
-# Author: Gregory Nutt <gnutt@nuttx.org>
-#
-# 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
--include $(TOPDIR)/Make.defs
-
-BIN1 = hello++1
-BIN2 = hello++2
-BIN3 = hello++3
-#BIN4 = hello++4
-ALL_BIN = $(BIN1) $(BIN2) $(BIN3) $(BIN4)
-
-SRCS1 = $(BIN1).c
-OBJS1 = $(SRCS1:.c=.o)
-
-SRCS2 = $(BIN2).c
-OBJS2 = $(SRCS2:.c=.o)
-
-SRCS3 = $(BIN3).c
-OBJS3 = $(SRCS3:.c=.o)
-
-#SRCS4 = $(BIN4).c
-#OBJS4 = $(SRCS4:.c=.o)
-
-SRCS = $(SRCS1) $(SRCS2) $(SRCS3) $(SRCS4)
-OBJS = $(OBJS1) $(OBJS2) $(OBJS3) $(OBJS4)
-
-LIBSTDC_STUBS_DIR = $(TOPDIR)/libxx
-LIBSTDC_STUBS_LIB = $(LIBSTDC_STUBS_DIR)/liblibxx.a
-
-all: $(BIN1) $(BIN2) $(BIN3) $(BIN4)
-
-$(OBJS): %.o: %.cpp
- @echo "CC: $<"
- @$(CXX) -c $(CXXFLAGS) $< -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): $(OBJS1)
- @echo "LD: $<"
- @$(LD) $(LDELFFLAGS) -o $@ $^
-
-$(BIN2): $(OBJS2)
- @echo "LD: $<"
- @$(LD) $(LDELFFLAGS) -o $@ $^
-
-# BIN3 is equivalent to BIN2 except that is uses static initializers
-
-$(BIN3): $(OBJS3)
- @echo "LD: $<"
- @$(LD) $(LDELFFLAGS) -o $@ $^
-
-# BIN4 is similar to BIN3 except that it uses the streams code from libstdc++
-#
-# NOTE: libstdc++ is not available for NuttX as of this writing
-#
-#$(BIN4): $(OBJS4)
-# @echo "LD: $<"
-# @$(LD) $(LDELFFLAGS) -o $@ $^
-
-clean:
- @rm -f $(ALL_BIN) *.o *~ .*.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/elf/tests/hello++/hello++1.cpp b/apps/examples/elf/tests/hello++/hello++1.cpp
deleted file mode 100644
index 22a728188..000000000
--- a/apps/examples/elf/tests/hello++/hello++1.cpp
+++ /dev/null
@@ -1,60 +0,0 @@
-/////////////////////////////////////////////////////////////////////////////
-// examples/elf/tests/hello++/hello++1.c
-//
-// Copyright (C) 2012 Gregory Nutt. All rights reserved.
-// Author: Gregory Nutt <gnutt@nuttx.org>
-//
-// 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 <cstdio>
-
-/////////////////////////////////////////////////////////////////////////////
-// Public Functions
-/////////////////////////////////////////////////////////////////////////////
-
-int main(int argc, char **argv)
-{
- printf("Hello, World!\n");
- return 0;
-}
diff --git a/apps/examples/elf/tests/hello++/hello++2.cpp b/apps/examples/elf/tests/hello++/hello++2.cpp
deleted file mode 100644
index a8ba589bd..000000000
--- a/apps/examples/elf/tests/hello++/hello++2.cpp
+++ /dev/null
@@ -1,123 +0,0 @@
-/////////////////////////////////////////////////////////////////////////////
-// examples/elf/tests/hello++/hello++2.c
-//
-// Copyright (C) 2012 Gregory Nutt. All rights reserved.
-// Author: Gregory Nutt <gnutt@nuttx.org>
-//
-// 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 <cstdio>
-
-/////////////////////////////////////////////////////////////////////////////
-// 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/elf/tests/hello++/hello++3.cpp b/apps/examples/elf/tests/hello++/hello++3.cpp
deleted file mode 100644
index eedaa6df0..000000000
--- a/apps/examples/elf/tests/hello++/hello++3.cpp
+++ /dev/null
@@ -1,132 +0,0 @@
-/////////////////////////////////////////////////////////////////////////////
-// examples/elf/tests/hello++/hello++3.c
-//
-// Copyright (C) 2012 Gregory Nutt. All rights reserved.
-// Author: Gregory Nutt <gnutt@nuttx.org>
-//
-// 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 <cstdio>
-
-/////////////////////////////////////////////////////////////////////////////
-// 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/elf/tests/hello++/hello++4.cpp b/apps/examples/elf/tests/hello++/hello++4.cpp
deleted file mode 100644
index 1a9f2e28b..000000000
--- a/apps/examples/elf/tests/hello++/hello++4.cpp
+++ /dev/null
@@ -1,150 +0,0 @@
-/////////////////////////////////////////////////////////////////////////////
-// examples/elf/tests/hello++/hello++4.c
-//
-// Copyright (C) 2012 Gregory Nutt. All rights reserved.
-// Author: Gregory Nutt <gnutt@nuttx.org>
-//
-// 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 <cstdio>
-#include <iostream>
-
-#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;
-}