Re: What's the connection between objects and threads?

From:
James Kanze <james.kanze@gmail.com>
Newsgroups:
comp.lang.c++
Date:
Wed, 21 May 2008 02:06:09 -0700 (PDT)
Message-ID:
<58c04182-060d-4f10-8ad3-816b18992994@8g2000hse.googlegroups.com>
On May 21, 1:34 am, Szabolcs Ferenczi <szabolcs.feren...@gmail.com>
wrote:

On May 20, 11:45 pm, gpderetta <gpdere...@gmail.com> wrote:

2) In procedural languages if you introduce a keyword for a
Critical Region, you must also give some means to associate
which shared variables are involved. So, fixing your example,
if there is a shared resource `m' you can define a critical
region using a keyword like `synchronized' such as this:

shared int m; // the `shared' keyword marks the shared variable
...
synchronized(m) {
  // here you can access `m'
}

Now the compiler can make sure that `m' is accessed within
Critical Regions and only within Critical Regions.


And what does that buy us? It prevents some very useful idioms,
while adding no real additional safety.

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