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Merge pull request #1857 from DarthSim/fix/separate-lock-for-pdfium

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Separate lock for PDFium
This commit is contained in:
John Cupitt 2020-10-13 14:56:15 +01:00 committed by GitHub
commit 62ad3c222e
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 29 additions and 17 deletions
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46
libvips/foreign/pdfiumload.c
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@ -128,6 +128,8 @@ static char *vips_pdfium_errors[] = {
"page not found or content error"
};
static GMutex *vips_pdfium_mutex = NULL;
static void
vips_pdfium_error( void )
{
@ -143,12 +145,12 @@ vips_pdfium_error( void )
static void
vips_foreign_load_pdf_close( VipsForeignLoadPdf *pdf )
{
g_mutex_lock( vips__global_lock );
g_mutex_lock( vips_pdfium_mutex );
VIPS_FREEF( FPDF_ClosePage, pdf->page );
VIPS_FREEF( FPDF_CloseDocument, pdf->doc );
g_mutex_unlock( vips__global_lock );
g_mutex_unlock( vips_pdfium_mutex );
}
static void
@ -217,7 +219,7 @@ vips_foreign_load_pdf_get_page( VipsForeignLoadPdf *pdf, int page_no )
if( pdf->current_page != page_no ) {
VipsObjectClass *class = VIPS_OBJECT_GET_CLASS( pdf );
g_mutex_lock( vips__global_lock );
g_mutex_lock( vips_pdfium_mutex );
VIPS_FREEF( FPDF_ClosePage, pdf->page );
pdf->current_page = -1;
@ -227,7 +229,7 @@ vips_foreign_load_pdf_get_page( VipsForeignLoadPdf *pdf, int page_no )
#endif /*DEBUG*/
if( !(pdf->page = FPDF_LoadPage( pdf->doc, page_no )) ) {
g_mutex_unlock( vips__global_lock );
g_mutex_unlock( vips_pdfium_mutex );
vips_pdfium_error();
vips_error( class->nickname,
_( "unable to load page %d" ), page_no );
@ -235,7 +237,7 @@ vips_foreign_load_pdf_get_page( VipsForeignLoadPdf *pdf, int page_no )
}
pdf->current_page = page_no;
g_mutex_unlock( vips__global_lock );
g_mutex_unlock( vips_pdfium_mutex );
}
return( 0 );
@ -285,9 +287,9 @@ vips_foreign_load_pdf_set_image( VipsForeignLoadPdf *pdf, VipsImage *out )
char text[1024];
int len;
g_mutex_lock( vips__global_lock );
g_mutex_lock( vips_pdfium_mutex );
len = FPDF_GetMetaText( pdf->doc, metadata->tag, text, 1024 );
g_mutex_unlock( vips__global_lock );
g_mutex_unlock( vips_pdfium_mutex );
if( len > 0 ) {
char *str;
@ -327,9 +329,9 @@ vips_foreign_load_pdf_header( VipsForeignLoad *load )
printf( "vips_foreign_load_pdf_header: %p\n", pdf );
#endif /*DEBUG*/
g_mutex_lock( vips__global_lock );
g_mutex_lock( vips_pdfium_mutex );
pdf->n_pages = FPDF_GetPageCount( pdf->doc );
g_mutex_unlock( vips__global_lock );
g_mutex_unlock( vips_pdfium_mutex );
/* @n == -1 means until the end of the doc.
*/
@ -448,7 +450,7 @@ vips_foreign_load_pdf_generate( VipsRegion *or,
/* 4 means RGBA.
*/
g_mutex_lock( vips__global_lock );
g_mutex_lock( vips_pdfium_mutex );
bitmap = FPDFBitmap_CreateEx( rect.width, rect.height, 4,
VIPS_REGION_ADDR( or, rect.left, rect.top ),
@ -460,7 +462,7 @@ vips_foreign_load_pdf_generate( VipsRegion *or,
FPDFBitmap_Destroy( bitmap );
g_mutex_unlock( vips__global_lock );
g_mutex_unlock( vips_pdfium_mutex );
top += rect.height;
i += 1;
@ -522,9 +524,19 @@ vips_foreign_load_pdf_load( VipsForeignLoad *load )
return( 0 );
}
static void *
vips_pdfium_init_mutex( void *data )
{
vips_pdfium_mutex = vips_g_mutex_new();
return( NULL );
}
static void
vips_foreign_load_pdf_class_init( VipsForeignLoadPdfClass *class )
{
static GOnce vips_pdfium_once = G_ONCE_INIT;
VIPS_ONCE( &vips_pdfium_once, vips_pdfium_init_mutex, NULL );
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
VipsObjectClass *object_class = (VipsObjectClass *) class;
VipsForeignLoadClass *load_class = (VipsForeignLoadClass *) class;
@ -609,17 +621,17 @@ vips_foreign_load_pdf_file_header( VipsForeignLoad *load )
VipsForeignLoadPdf *pdf = (VipsForeignLoadPdf *) load;
VipsForeignLoadPdfFile *file = (VipsForeignLoadPdfFile *) load;
g_mutex_lock( vips__global_lock );
g_mutex_lock( vips_pdfium_mutex );
if( !(pdf->doc = FPDF_LoadDocument( file->filename, NULL )) ) {
g_mutex_unlock( vips__global_lock );
g_mutex_unlock( vips_pdfium_mutex );
vips_pdfium_error();
vips_error( "pdfload",
_( "unable to load \"%s\"" ), file->filename );
return( -1 );
}
g_mutex_unlock( vips__global_lock );
g_mutex_unlock( vips_pdfium_mutex );
VIPS_SETSTR( load->out->filename, file->filename );
@ -685,18 +697,18 @@ vips_foreign_load_pdf_buffer_header( VipsForeignLoad *load )
VipsForeignLoadPdfBuffer *buffer =
(VipsForeignLoadPdfBuffer *) load;
g_mutex_lock( vips__global_lock );
g_mutex_lock( vips_pdfium_mutex );
if( !(pdf->doc = FPDF_LoadMemDocument( buffer->buf->data,
buffer->buf->length, NULL )) ) {
g_mutex_unlock( vips__global_lock );
g_mutex_unlock( vips_pdfium_mutex );
vips_pdfium_error();
vips_error( "pdfload",
"%s", _( "unable to load from buffer" ) );
return( -1 );
}
g_mutex_unlock( vips__global_lock );
g_mutex_unlock( vips_pdfium_mutex );
return( vips_foreign_load_pdf_header( load ) );
}