* src/toolbox/sequence.hpp: Added new file to hold sequence builder class.
authorMichael Starzinger <michi@complang.tuwien.ac.at>
Mon, 7 Sep 2009 22:23:11 +0000 (00:23 +0200)
committerMichael Starzinger <michi@complang.tuwien.ac.at>
Mon, 7 Sep 2009 22:23:11 +0000 (00:23 +0200)
* src/toolbox/Makefile.am (libtoolbox_la_SOURCES): Added above file.
* src/native/vm/nativevm.cpp: Use new sequence builder class.
* src/native/vm/openjdk/hpi.cpp: Likewise.
* src/native/vm/gnuclasspath/gnu_classpath_VMSystemProperties.cpp: Likewise.

src/native/vm/gnuclasspath/gnu_classpath_VMSystemProperties.cpp
src/native/vm/nativevm.cpp
src/native/vm/openjdk/hpi.cpp
src/toolbox/Makefile.am
src/toolbox/sequence.hpp [new file with mode: 0644]

index dc4e5ebb04726356aa8a571c0f3b228669a116b9..1141ae4e6193231826c2f9c5db4b91273aba0c5f 100644 (file)
@@ -39,6 +39,8 @@
 # include "native/include/gnu_classpath_VMSystemProperties.h"
 #endif
 
+#include "toolbox/sequence.hpp"
+
 #include "vm/exceptions.hpp"
 #include "vm/properties.hpp"
 #include "vm/vm.hpp"
@@ -78,8 +80,6 @@ JNIEXPORT void JNICALL Java_gnu_classpath_VMSystemProperties_postInit(JNIEnv *en
        java_handle_t *p;
 #if defined(ENABLE_JRE_LAYOUT)
        const char *java_home;
-       char *path;
-       s4    len;
 #endif
 
        p = (java_handle_t *) properties;
@@ -99,21 +99,14 @@ JNIEXPORT void JNICALL Java_gnu_classpath_VMSystemProperties_postInit(JNIEnv *en
 
        Properties::put(p, "gnu.classpath.home", java_home);
 
-       len =
-               strlen("file://") +
-               strlen(java_home) +
-               strlen("/lib") +
-               strlen("0");
-
-       path = MNEW(char, len);
-
-       strcpy(path, "file://");
-       strcat(path, java_home);
-       strcat(path, "/lib");
+       // Use sequence builder to assemble value.
+       SequenceBuilder sb;
 
-       Properties::put(p, "gnu.classpath.home.url", path);
+       sb.cat("file://");
+       sb.cat(java_home);
+       sb.cat("/lib");
 
-       MFREE(path, char, len);
+       Properties::put(p, "gnu.classpath.home.url", sb.c_str());
 #endif
 }
 
index 837b4a0b76338fd5c9ba7760948fc5755ca01bdb..4b2e9bee4350e9471c98124d5956309f021c7343 100644 (file)
@@ -43,6 +43,8 @@
 
 # include "native/vm/openjdk/hpi.hpp"
 
+# include "toolbox/sequence.hpp"
+
 # include "vm/globals.hpp"
 # include "vm/properties.hpp"
 # include "vm/utf8.h"
@@ -100,25 +102,20 @@ void nativevm_preinit(void)
        Properties& properties = vm->get_properties();
        const char* boot_library_path = properties.get("sun.boot.library.path");
 
-       size_t len =
-               os::strlen(boot_library_path) +
-               os::strlen("/libjava.so") +
-               os::strlen("0");
-
-       char* p = MNEW(char, len);
+       // Use sequence builder to assemble library path.
+       SequenceBuilder sb;
 
-       os::strcpy(p, boot_library_path);
-       os::strcat(p, "/libjava.so");
+       sb.cat(boot_library_path);
+       sb.cat("/libjava.so");
 
-       utf* u = utf_new_char(p);
+       // XXX This should actually be sb.export_symbol()
+       utf* u = utf_new_char(sb.c_str());
 
        NativeLibrary nl(u);
        void* handle = nl.open();
 
        if (handle == NULL)
-               os::abort("nativevm_init: failed to open libjava.so at: %s", p);
-
-       MFREE(p, char, len);
+               os::abort("nativevm_init: failed to open libjava.so at: %s", sb.c_str());
 
        NativeLibraries& nls = vm->get_nativelibraries();
        nls.add(nl);
index 7c7527897a487dffbae493c7ffc441f5441f43d1..1bb2d52d0b07fa31c963a9c2106146f4bb318192 100644 (file)
@@ -32,6 +32,8 @@
 
 #include "native/native.hpp"
 
+#include "toolbox/sequence.hpp"
+
 #include "vm/options.h"
 #include "vm/os.hpp"
 #include "vm/properties.hpp"
@@ -72,22 +74,17 @@ void HPI::initialize() // REMOVEME
        Properties& properties = vm->get_properties();
        const char* boot_library_path = properties.get("sun.boot.library.path");
 
-       size_t len =
-               os::strlen(boot_library_path) +
-               os::strlen("/native_threads/libhpi.so") +
-               os::strlen("0");
-
-       char* p = MNEW(char, len);
+       // Use sequence builder to assemble library path.
+       SequenceBuilder sb;
 
-       os::strcpy(p, boot_library_path);
-       os::strcat(p, "/native_threads/libhpi.so");
+       sb.cat(boot_library_path);
+       sb.cat("/native_threads/libhpi.so");
 
-       utf* u = utf_new_char(p);
+       // XXX This should actually be sb.export_symbol()
+       utf* u = utf_new_char(sb.c_str());
 
     if (opt_TraceHPI)
-               log_println("HPI::initialize: Loading HPI %s ", p);
-
-       MFREE(p, char, len);
+               log_println("HPI::initialize: Loading HPI %s ", sb.c_str());
 
        NativeLibrary nl(u);
        void* handle = nl.open();
index 32048a75bf17805cf61706ae06da40afcdad8991..9fc4b6d31bbc54c61261ef12a3ad23d3c8f3ee31 100644 (file)
@@ -38,6 +38,7 @@ libtoolbox_la_SOURCES = \
        list.hpp \
        logging.cpp \
        logging.hpp \
+       sequence.hpp \
        set.h \
        set.c \
        util.c \
diff --git a/src/toolbox/sequence.hpp b/src/toolbox/sequence.hpp
new file mode 100644 (file)
index 0000000..d9dc94e
--- /dev/null
@@ -0,0 +1,83 @@
+/* src/toolbox/sequence.hpp - sequence builder class header
+
+   Copyright (C) 2009
+   CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
+   Copyright (C) 2009 Theobroma Systems Ltd.
+
+   This file is part of CACAO.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301, USA.
+
+*/
+
+
+#ifndef _SEQUENCE_HPP
+#define _SEQUENCE_HPP
+
+#include "config.h"
+
+#include <string>
+
+
+/**
+ * This class is a mutable and dynamically growing character sequence.
+ * Its main purpose is to dynamically construct Strings or Symbols which
+ * both are immutable.
+ *
+ * The buffer backing up this class is automatically (re)allocated as the
+ * sequence grows, no additional length checks are required. Furthermore
+ * the buffer memory is released once the builder is destructed and it's
+ * content is destroyed. To preserve the content, it has to be exported
+ * with one of the exporting functions.
+ */
+class SequenceBuilder {
+private:
+       std::string _str;
+
+public:
+       // Constructor.
+       SequenceBuilder() {}
+
+       // Concatenation operations.
+       void cat(char ch)        { _str.push_back(ch); }
+       void cat(char ch, int n) { _str.append(n, ch); }
+       void cat(const char* s)  { _str.append(s); }
+
+       // Exporting functions.
+       //Object* export_string();
+       //Symbol* export_symbol();
+
+       // Be careful and see std::string::c_str() for details.
+       const char* c_str() const { return _str.c_str(); }
+};
+
+
+#endif // _SEQUENCE_HPP
+
+
+/*
+ * These are local overrides for various environment variables in Emacs.
+ * Please do not remove this and leave it at the end of the file, where
+ * Emacs will automagically detect them.
+ * ---------------------------------------------------------------------
+ * Local variables:
+ * mode: c++
+ * indent-tabs-mode: t
+ * c-basic-offset: 4
+ * tab-width: 4
+ * End:
+ * vim:noexpandtab:sw=4:ts=4:
+ */