[cairo] Cairo and multithreading einvironment.

[Horodyski Marek (PZUZ)]

> -----Original Message-----

> From: Horodyski Marek (PZUZ)

> Sent: Friday, July 15, 2011 12:28 PM

> To: cairo at cairographics.org

> Subject: Cairo and multithreading einvironment.

[...] 

> Cairo works well in an sigle thread environment, but I have problems
in

> multi-threaded.

 

When I use Cairo In MultiThread environment without mutex synchronize,
on monitor I see :

 

 

 

I can work with mutex synchronize, but but it costs time L

 

Example code :

 

hSurface := cairo_pdf_surface_create( "TEST.PDF", 566.9, 793.7 )  //
200x280 mm in pt

hCairo   := cairo_create( hSurface )

cairo_set_source_rgb( hCairo, 0, 0, 0 )

cairo_select_font_face( hCairo, "verdana", CAIRO_FONT_SLANT_NORMAL, 0 )

cairo_set_font_size( hCairo, 6 )

cairo_move_to( hCairo, 1, 7 )

cairo_show_text( hCairo, "Some text")

...

cairo_show_page( hCairo )

cairo_destroy( hCairo )

cairo_surface_destroy( hSurface )

 

String "TEST.PDF" in different thread are differ.

 

Regards,

Marek Horodyski

 

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