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TinyGC is an independent implementation of the API of the well-known Boehm-Demers-Weiser Conservative GC ("BDWGC" or "BoehmGC" for short).

TinyGC has been initially developed as a part of the JCGO project to be used as a BoehmGC replacement. At present, TinyGC is a standalone project.


To get the latest TinyGC stable release source code, please visit "Browse files for TinyGC".

Target environments

TinyGC is designed to be used primary in projects requiring Java-like memory garbage collection functionality for:

TinyGC is NOT designed for speed.

Design principles

The major principles are:

Advantages and drawbacks

The major TinyGC advantages over BoehmGC are:

The drawbacks of TinyGC are:


Release notes:

Implementation notes:

Usage notes:

Tuning macros

Useful macros for tuning (same as in BoehmGC):

Major TinyGC-specific macros:

Useful macros for client application tuning (same as in BoehmGC):

Note 1: if GC_NO_DLINKS is used without GC_NO_REGISTER_DLINK then all the disappearing links are treated as normal pointers.

Note 2: for Unix use the command-line options:


Note 3: for Solaris SunOS "cc" use the command-line options:


Environment variables

Environment variables recognized (if supported, same as in BoehmGC):

Note: the values assigned to the specified environment variables override the similar default (or the preset at the compilation time) values.

Files list

The TinyGC distribution consists of:

User's feedback

Any questions, suggestions, bug reports and patches are welcomed at the TinyGC site tracker (hosted at

External resources

Links to the 3rd-party projects:

For more links, please visit "Java and C/C++ developer web resources" hosted on the JCGO project (a java2c/java2exe solution) site.


This 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 software 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 (GPL) 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.

Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination.

As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

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