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| author | Mihai Moldovan <ionic@ionic.de> | 2015-02-09 15:41:35 +0100 |
|---|---|---|
| committer | Mike Gabriel <mike.gabriel@das-netzwerkteam.de> | 2015-02-09 15:42:21 +0100 |
| commit | 9054786947b2f6b82078f6e5f965c3b0b629c880 (patch) | |
| tree | 173e82157d5a61d61dcf70d5358fa2fe79108be4 /nxcomp/Agent.h | |
| parent | 6101bd9564d6334dea7c0de778536e3fe1a5e9b9 (diff) | |
| download | nx-libs-9054786947b2f6b82078f6e5f965c3b0b629c880.tar.gz nx-libs-9054786947b2f6b82078f6e5f965c3b0b629c880.tar.bz2 nx-libs-9054786947b2f6b82078f6e5f965c3b0b629c880.zip | |
workaround for Mac OS X 10.5 (051_nxcomp_macos105-fdisset.full+lite.patch(
The Mac OS X 10.5 SDK requires the second argument of FD_ISSET to be
writeable, although it does only access the data. Given that we have a
const pointer for a const struct, copy and pass that.
.
Note that this is merely a workaround for OS X 10.5, as 10.6 and later
define the second argument of FD_ISSET as const struct const *foo, too.
.
It is safe, as data is accessed read-only by FD_ISSET, even on 10.5.
Diffstat (limited to 'nxcomp/Agent.h')
| -rw-r--r-- | nxcomp/Agent.h | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/nxcomp/Agent.h b/nxcomp/Agent.h index fac5acd43..ded344d84 100644 --- a/nxcomp/Agent.h +++ b/nxcomp/Agent.h @@ -149,30 +149,38 @@ class Agent int remoteCanRead(const fd_set * const readSet) { + // OS X 10.5 requires the second argument to be non-const, so copy readSet. + // It's safe though, as FD_ISSET does not operate on it. + fd_set readWorkSet = *readSet; + #if defined(TEST) || defined(INFO) *logofs << "Agent: remoteCanRead() is " << - (FD_ISSET(remoteFd_, readSet) && transport_ -> dequeuable() != 0) - << " with FD_ISSET() " << (int) FD_ISSET(remoteFd_, readSet) + (FD_ISSET(remoteFd_, &readWorkSet) && transport_ -> dequeuable() != 0) + << " with FD_ISSET() " << (int) FD_ISSET(remoteFd_, &readWorkSet) << " and dequeuable " << transport_ -> dequeuable() << ".\n" << logofs_flush; #endif - return (FD_ISSET(remoteFd_, readSet) && + return (FD_ISSET(remoteFd_, &readWorkSet) && transport_ -> dequeuable() != 0); } int remoteCanWrite(const fd_set * const writeSet) { + // OS X 10.5 requires the second argument to be non-const, so copy writeSet. + // It's safe though, as FD_ISSET does not operate on it. + fd_set writeWorkSet = *writeSet; + #if defined(TEST) || defined(INFO) *logofs << "Agent: remoteCanWrite() is " << - (FD_ISSET(remoteFd_, writeSet) && transport_ -> + (FD_ISSET(remoteFd_, &writeWorkSet) && transport_ -> queuable() != 0 && canRead_ == 1) << " with FD_ISSET() " - << (int) FD_ISSET(remoteFd_, writeSet) << " queueable " + << (int) FD_ISSET(remoteFd_, &writeWorkSet) << " queueable " << transport_ -> queuable() << " channel can read " << canRead_ << ".\n" << logofs_flush; #endif - return (FD_ISSET(remoteFd_, writeSet) && + return (FD_ISSET(remoteFd_, &writeWorkSet) && transport_ -> queuable() != 0 && canRead_ == 1); } @@ -203,13 +211,17 @@ class Agent int proxyCanRead(const fd_set * const readSet) { + // OS X 10.5 requires the second argument to be non-const, so copy readSet. + // It's safe though, as FD_ISSET does not operate on it. + fd_set readWorkSet = *readSet; + #if defined(TEST) || defined(INFO) *logofs << "Agent: proxyCanRead() is " - << ((int) FD_ISSET(proxy -> getFd(), readSet) + << ((int) FD_ISSET(proxy -> getFd(), &readWorkSet) << ".\n" << logofs_flush; #endif - return (FD_ISSET(proxy -> getFd(), readSet)); + return (FD_ISSET(proxy -> getFd(), &readWorkSet)); } int enqueueData(const char *data, const int size) const |