Further to this Mastering Delphi 4 by Marco Cantu http://www.marcocantu.com
(table of contents follows)
Note in d3/d4 the tthread object was flawed I have not checked to see if it
has been fixed in later versions.
Exception handling in threads is critical an unhandled exception on:
creating a thread,
in the thread or
disposal of the thread,
can cause the complete melt down of your application and occasionally
windows 2k.
Maurice
CHAPTER 20: MUTEXES, THREADS, AND SYNCHRONIZATION
Checking for a Previous Instance
of an Application
Traditional Techniques
Looking for a Copy of the Main Window
Activating the Previous Main Form
Handling User-Defined Window Messages
Searching the Window List
Using a Mutex
Events, Messages, and Multitasking in Windows
Event-Driven Programming
Windows Message Delivery
Idle Computing and Multitasking
Background Processing
Multithreading in Delphi
The TThread Class
A First Example
A Locking Example
Synchronization Alternatives
Thread Priorities
A Database Example
Synchronizing Threads
Waiting for a Thread
Windows Synchronization Techniques
Building an Example
The Plain Thread
Using Critical Sections
Using a Mutex
Using a TCriticalSection VCL Object
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Maurice Butler
Sent: Friday, 18 May 2007 5:13 p.m.
To: 'NZ Borland Developers Group - Delphi List'
Subject: RE: [DUG] Best way to make this thread safe
1. does not use vcl
2. access to file is serialized so only one thread at the time can access it
3. proven in real time manufacturing enviornment for over 10 years
4. if you don't understand why it is thread safe you shouldn't be using
threads
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Trevor Jones
Sent: Thursday, 17 May 2007 11:16 p.m.
To: 'NZ Borland Developers Group - Delphi List'
Subject: RE: [DUG] Best way to make this thread safe
In what way is this thread safe?
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