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.\" You can view this file with:
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.\" nroff -man [file]
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.\" $Id: curl_global_init.3,v 1.3 2004/05/11 11:30:23 bagder Exp $
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.\" $Id: curl_global_init.3,v 1.5 2006/01/15 23:55:53 bagder Exp $
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.TH curl_global_init 3 "11 May 2004" "libcurl 7.12" "libcurl Manual"
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.BI "CURLcode curl_global_init(long " flags ");"
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This function should only be called once (no matter how many threads or
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libcurl sessions that'll be used) by every application that uses libcurl.
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If this function hasn't been invoked when \fIcurl_easy_init(3)\fP is called,
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it will be done automatically by libcurl.
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The flags option is a bit pattern that tells libcurl exact what features to
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This function sets up the program environment that libcurl needs. Think
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of it as an extension of the library loader.
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This function must be called at least once within a program (a program is
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all the code that shares a memory space) before the program calls any other
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function in libcurl. The environment it sets up is constant for the life
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of the program and is the same for every program, so multiple calls have
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the same effect as one call.
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The flags option is a bit pattern that tells libcurl exactly what features to
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init, as described below. Set the desired bits by ORing the values together.
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You must however \fBalways\fP use the \fIcurl_global_cleanup(3)\fP function,
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as that cannot be called automatically for you by libcurl.
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Calling this function more than once will cause unpredictable results.
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In normal operation, you must specify CURL_GLOBAL_ALL. Don't use any other
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value unless you are familiar with and mean to control internal operations
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\fBThis function is not thread safe.\fP You must not call it when any
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other thread in the program (i.e. a thread sharing the same memory) is
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running. This doesn't just mean no other thread that is using
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libcurl. Because \fIcurl_global_init()\fP calls functions of other
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libraries that are similarly thread unsafe, it could conflict with any
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other thread that uses these other libraries.
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See the description in \fBlibcurl\fP(3) of global environment
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requirements for details of how to use this function.
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docs/libcurl/curl_global_init.3
