Add tests for JIT fast path.

doc/pcre2jit.3

@@ -1,4 +1,4 @@
-.TH PCRE2JIT 3 "27 October 2014" "PCRE2 10.00"
+.TH PCRE2JIT 3 "02 November 2014" "PCRE2 10.00"
 .SH NAME
 PCRE2 - Perl-compatible regular expressions (revised API)
 .SH "PCRE2 JUST-IN-TIME COMPILER SUPPORT"
@@ -349,11 +349,11 @@ processed by \fBpcre2_jit_compile()\fP).
 The fast path function is called \fBpcre2_jit_match()\fP, and it takes exactly
 the same arguments as \fBpcre2_match()\fP, plus one additional argument that
 must either point to a JIT stack or be NULL. In the latter case, if a callback
-function has been set up by \fBpcre2_jit_stack_alloc()\fP, it is called.
+function has been set up by \fBpcre2_jit_stack_assign()\fP, it is called.
 Otherwise the system stack is used. The return values are the same as for
 \fBpcre2_match()\fP, plus PCRE2_ERROR_JIT_BADOPTION if a matching mode (partial
-or complete) is requested that was not compiled. Unsupported option bits are
+or complete) is requested that was not compiled. Unsupported option bits (for 
-ignored.
+example, PCRE2_ANCHORED) are ignored.
 .P
 When you call \fBpcre2_match()\fP, as well as testing for invalid options, a
 number of other sanity checks are performed on the arguments. For example, if
@@ -386,6 +386,6 @@ Cambridge CB2 3QH, England.
 .rs
 .sp
 .nf
-Last updated: 27 October 2014
+Last updated: 02 November 2014
 Copyright (c) 1997-2014 University of Cambridge.
 .fi

doc/pcre2test.1

@@ -1,4 +1,4 @@
-.TH PCRE2TEST 1 "31 October 2014" "PCRE 10.00"
+.TH PCRE2TEST 1 "02 November 2014" "PCRE 10.00"
 .SH NAME
 pcre2test - a program for testing Perl-compatible regular expressions.
 .SH SYNOPSIS
@@ -437,6 +437,7 @@ about the pattern:
   /I  info                      show info about compiled pattern
       hex                       pattern is coded in hexadecimal
       jit[=<number>]            use JIT
+      jitfast                   use JIT fast path 
       jitverify                 verify JIT use
       locale=<name>             use this locale
       memory                    show memory used
@@ -531,6 +532,12 @@ are specified. For more details, see the
 documentation. See also the \fBjitstack\fP modifier below for a way of
 setting the size of the JIT stack.
 .P
+If the \fBjitfast\fP modifier is specified, matching is done using the JIT
+"fast path" interface (\fBpcre2_jit_match()), which skips some of the sanity
+checks that are done by \fBpcre2_match()\fP, and of course does not work when
+JIT is not supported. If \fBjitfast\fP is specified without \fBjit\fP, jit=7 is
+assumed.
+.P
 If the \fBjitverify\fP modifier is specified, information about the compiled
 pattern shows whether JIT compilation was or was not successful. If
 \fBjitverify\fP is specified without \fBjit\fP, jit=7 is assumed. If JIT
@@ -847,8 +854,9 @@ current character is CR followed by LF, an advance of two is used.
 .sp
 The \fBjitstack\fP modifier provides a way of setting the maximum stack size
 that is used by the just-in-time optimization code. It is ignored if JIT
-optimization is not being used. Providing a stack that is larger than the
+optimization is not being used. The value is a number of kilobytes. Providing a
-default 32K is necessary only for very complicated patterns.
+stack that is larger than the default 32K is necessary only for very
+complicated patterns. 
 .
 .
 .SS "Setting match and recursion limits"
@@ -1165,10 +1173,9 @@ characters.
 .SH "SEE ALSO"
 .rs
 .sp
-\fBpcre2\fP(3), \fBpcre16\fP(3), \fBpcre32\fP(3), \fBpcre2api\fP(3),
+\fBpcre2\fP(3), \fBpcre2api\fP(3), \fBpcre2callout\fP(3),
-\fBpcre2callout\fP(3),
 \fBpcre2jit\fP, \fBpcre2matching\fP(3), \fBpcre2partial\fP(d),
-\fBpcre2pattern\fP(3), \fBpcre2precompile\fP(3).
+\fBpcre2pattern\fP(3).
 .
 .
 .SH AUTHOR
@@ -1185,6 +1192,6 @@ Cambridge CB2 3QH, England.
 .rs
 .sp
 .nf
-Last updated: 31 October 2014
+Last updated: 02 November 2014
 Copyright (c) 1997-2014 University of Cambridge.
 .fi

src/pcre2test.c

@@ -340,12 +340,13 @@ either on a pattern or a data line, so they must all be distinct. */
 #define CTL_GLOBAL             0x00001000u
 #define CTL_HEXPAT             0x00002000u
 #define CTL_INFO               0x00004000u
-#define CTL_JITVERIFY          0x00008000u
+#define CTL_JITFAST            0x00008000u
-#define CTL_MARK               0x00010000u
+#define CTL_JITVERIFY          0x00010000u
-#define CTL_MEMORY             0x00020000u
+#define CTL_MARK               0x00020000u
-#define CTL_PATLEN             0x00040000u
+#define CTL_MEMORY             0x00040000u
-#define CTL_POSIX              0x00080000u
+#define CTL_PATLEN             0x00080000u
-#define CTL_STARTCHAR          0x00100000u
+#define CTL_POSIX              0x00100000u
+#define CTL_STARTCHAR          0x00200000u
 
 #define CTL_BSR_SET          0x80000000u  /* This is informational */
 #define CTL_NL_SET           0x40000000u  /* This is informational */
@@ -363,7 +364,6 @@ data line. */
                     CTL_ALLUSEDTEXT|\
                     CTL_ALTGLOBAL|\
                     CTL_GLOBAL|\
-                    CTL_JITVERIFY|\
                     CTL_MARK|\
                     CTL_MEMORY|\
                     CTL_STARTCHAR)
@@ -455,6 +455,7 @@ static modstruct modlist[] = {
   { "hex",                 MOD_PAT,  MOD_CTL, CTL_HEXPAT,                PO(control) },
   { "info",                MOD_PAT,  MOD_CTL, CTL_INFO,                  PO(control) },
   { "jit",                 MOD_PAT,  MOD_IND, 7,                         PO(jit) },
+  { "jitfast",             MOD_PAT,  MOD_CTL, CTL_JITFAST,               PO(control) },
   { "jitstack",            MOD_DAT,  MOD_INT, 0,                         DO(jitstack) },
   { "jitverify",           MOD_PAT,  MOD_CTL, CTL_JITVERIFY,             PO(control) },
   { "locale",              MOD_PAT,  MOD_STR, 0,                         PO(locale) },
@@ -810,6 +811,17 @@ are supported. */
   else if (test_mode == PCRE16_MODE) pcre2_jit_free_unused_memory_16(G(a,16)); \
   else pcre2_jit_free_unused_memory_32(G(a,32))
 
+#define PCRE2_JIT_MATCH(a,b,c,d,e,f,g,h,i) \
+  if (test_mode == PCRE8_MODE) \
+    a = pcre2_jit_match_8(G(b,8),(PCRE2_SPTR8)c,d,e,f,G(g,8),G(h,8), \
+      (pcre2_jit_stack_8 *)i); \
+  else if (test_mode == PCRE16_MODE) \
+    a = pcre2_jit_match_16(G(b,16),(PCRE2_SPTR16)c,d,e,f,G(g,16),G(h,16), \
+      (pcre2_jit_stack_16 *)i); \
+  else \
+    a = pcre2_jit_match_32(G(b,32),(PCRE2_SPTR32)c,d,e,f,G(g,32),G(h,32), \
+      (pcre2_jit_stack_32 *)i)
+
 #define PCRE2_JIT_STACK_ALLOC(a,b,c,d) \
   if (test_mode == PCRE8_MODE) \
     a = (PCRE2_JIT_STACK *)pcre2_jit_stack_alloc_8(b,c,d); \
@@ -1180,6 +1192,14 @@ the three different cases. */
   else \
     G(pcre2_jit_free_unused_memory_,BITTWO)(G(a,BITTWO))
 
+#define PCRE2_JIT_MATCH(a,b,c,d,e,f,g,h,i) \
+  if (test_mode == G(G(PCRE,BITONE),_MODE)) \
+    a = G(pcre2_jit_match_,BITONE)(G(b,BITONE),(G(PCRE2_SPTR,BITONE))c,d,e,f, \
+      G(g,BITONE),G(h,BITONE),(G(pcre2_jit_stack_,BITONE) *)i); \
+  else \
+    a = G(pcre2_jit_match_,BITTWO)(G(b,BITTWO),(G(PCRE2_SPTR,BITTWO))c,d,e,f, \
+      G(g,BITTWO),G(h,BITTWO),(G(pcre2_jit_stack_,BITTWO) *)i)
+
 #define PCRE2_JIT_STACK_ALLOC(a,b,c,d) \
   if (test_mode == G(G(PCRE,BITONE),_MODE)) \
     a = (PCRE2_JIT_STACK *)G(pcre2_jit_stack_alloc_,BITONE)(b,c,d); \
@@ -1424,6 +1444,9 @@ the three different cases. */
 #define PCRE2_GET_STARTCHAR(a,b) a = pcre2_get_startchar_8(G(b,8))
 #define PCRE2_JIT_COMPILE(a,b) pcre2_jit_compile_8(G(a,8),b)
 #define PCRE2_JIT_FREE_UNUSED_MEMORY(a) pcre2_jit_free_unused_memory_8(G(a,8))
+#define PCRE2_JIT_MATCH(a,b,c,d,e,f,g,h,(pcre2_jit_stack_8 *)i) \
+  a = pcre2_jit_match_8(G(b,8),(PCRE2_SPTR8)c,d,e,f,G(g,8),G(h,8), \
+    (pcre2_jit_stack_8 *)i)
 #define PCRE2_JIT_STACK_ALLOC(a,b,c,d) \
   a = (PCRE2_JIT_STACK *)pcre2_jit_stack_alloc_8(b,c,d);
 #define PCRE2_JIT_STACK_ASSIGN(a,b,c) \
@@ -1500,6 +1523,9 @@ the three different cases. */
 #define PCRE2_GET_STARTCHAR(a,b) a = pcre2_get_startchar_16(G(b,16))
 #define PCRE2_JIT_COMPILE(a,b) pcre2_jit_compile_16(G(a,16),b)
 #define PCRE2_JIT_FREE_UNUSED_MEMORY(a) pcre2_jit_free_unused_memory_16(G(a,16))
+#define PCRE2_JIT_MATCH(a,b,c,d,e,f,g,h,i) \
+  a = pcre2_jit_match_16(G(b,16),(PCRE2_SPTR16)c,d,e,f,G(g,16),G(h,16), \
+    (pcre2_jit_stack_16 *)i)
 #define PCRE2_JIT_STACK_ALLOC(a,b,c,d) \
   a = (PCRE2_JIT_STACK *)pcre2_jit_stack_alloc_16(b,c,d);
 #define PCRE2_JIT_STACK_ASSIGN(a,b,c) \
@@ -1576,6 +1602,9 @@ the three different cases. */
 #define PCRE2_GET_STARTCHAR(a,b) a = pcre2_get_startchar_32(G(b,32))
 #define PCRE2_JIT_COMPILE(a,b) pcre2_jit_compile_32(G(a,32),b)
 #define PCRE2_JIT_FREE_UNUSED_MEMORY(a) pcre2_jit_free_unused_memory_32(G(a,32))
+#define PCRE2_JIT_MATCH(a,b,c,d,e,f,g,h,i) \
+  a = pcre2_jit_match_32(G(b,32),(PCRE2_SPTR32)c,d,e,f,G(g,32),G(h,32), \
+    (pcre2_jit_stack_32 *)i)
 #define PCRE2_JIT_STACK_ALLOC(a,b,c,d) \
   a = (PCRE2_JIT_STACK *)pcre2_jit_stack_alloc_32(b,c,d);
 #define PCRE2_JIT_STACK_ASSIGN(a,b,c) \
@@ -3154,7 +3183,7 @@ Returns:      nothing
 static void
 show_controls(uint32_t controls, const char *before)
 {
-fprintf(outfile, "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
+fprintf(outfile, "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
   before,
   ((controls & CTL_AFTERTEXT) != 0)? " aftertext" : "",
   ((controls & CTL_ALLAFTERTEXT) != 0)? " allaftertext" : "",
@@ -3171,6 +3200,7 @@ fprintf(outfile, "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
   ((controls & CTL_GLOBAL) != 0)? " global" : "",
   ((controls & CTL_HEXPAT) != 0)? " hex" : "",
   ((controls & CTL_INFO) != 0)? " info" : "",
+  ((controls & CTL_JITFAST) != 0)? " jitfast" : "",
   ((controls & CTL_JITVERIFY) != 0)? " jitverify" : "",
   ((controls & CTL_MARK) != 0)? " mark" : "",
   ((controls & CTL_MEMORY) != 0)? " memory" : "",
@@ -3648,7 +3678,11 @@ patlen = p - buffer - 2;
 
 if (!decode_modifiers(p, CTX_PAT, &pat_patctl, NULL)) return PR_SKIP;
 
-if (pat_patctl.jit == 0 && (pat_patctl.control & CTL_JITVERIFY) != 0)
+/* Assume full JIT compile for jitverify and/or jitfast if nothing else was
+specified. */
+
+if (pat_patctl.jit == 0 && 
+    (pat_patctl.control & (CTL_JITVERIFY|CTL_JITFAST)) != 0)
   pat_patctl.jit = 7;
 utf = (pat_patctl.options & PCRE2_UTF) != 0;
 
@@ -3959,8 +3993,12 @@ for (;;)
     PCRE2_SET_RECURSION_LIMIT(dat_context, mid);
     }
 
-  PCRE2_MATCH(capcount, compiled_code, pp, ulen, dat_datctl.offset,
+  if ((pat_patctl.control & CTL_JITFAST) != 0)
-    dat_datctl.options, match_data, dat_context);
+    PCRE2_JIT_MATCH(capcount, compiled_code, pp, ulen, dat_datctl.offset,
+      dat_datctl.options, match_data, dat_context, jit_stack);
+  else     
+    PCRE2_MATCH(capcount, compiled_code, pp, ulen, dat_datctl.offset,
+      dat_datctl.options, match_data, dat_context);
 
   if (capcount == errnumber)
     {
@@ -4651,9 +4689,13 @@ for (gmatched = 0;; gmatched++)
   PCRE2_SIZE *ovector;
   PCRE2_SIZE ovecsave[2];
 
-  jit_was_used = FALSE;
   ovector = FLD(match_data, ovector);
   
+  /* When matching is via pcre2_match(), we will detect the use of JIT via the
+  stack callback function. */
+ 
+  jit_was_used = (pat_patctl.control & CTL_JITFAST) != 0;
+
   /* After the first time round a global loop, save the current ovector[0,1] so
   that we can check that they do change each time. Otherwise a matching bug
   that returns the same string causes an infinite loop. It has happened! */
@@ -4669,8 +4711,7 @@ for (gmatched = 0;; gmatched++)
   if (timeitm > 0)
     {
     register int i;
-    clock_t time_taken;
+    clock_t start_time, time_taken;
-    clock_t start_time = clock();
 
     if ((dat_datctl.control & CTL_DFA) != 0)
       {
@@ -4681,6 +4722,7 @@ for (gmatched = 0;; gmatched++)
         }
       if (dfa_workspace == NULL)
         dfa_workspace = (int *)malloc(DFA_WS_DIMENSION*sizeof(int));
+      start_time = clock();   
       for (i = 0; i < timeitm; i++)
         {
         PCRE2_DFA_MATCH(capcount, compiled_code, pp, ulen,
@@ -4688,11 +4730,27 @@ for (gmatched = 0;; gmatched++)
           dat_context, dfa_workspace, DFA_WS_DIMENSION);
         }
       }
-    else for (i = 0; i < timeitm; i++)
+      
+    else if ((pat_patctl.control & CTL_JITFAST) != 0)
       {
-      PCRE2_MATCH(capcount, compiled_code, pp, ulen,
+      start_time = clock();
-        dat_datctl.offset, dat_datctl.options | g_notempty, match_data,
+      for (i = 0; i < timeitm; i++)
-        dat_context);
+        {
+        PCRE2_JIT_MATCH(capcount, compiled_code, pp, ulen,
+          dat_datctl.offset, dat_datctl.options | g_notempty, match_data,
+          dat_context, jit_stack);
+        }
+      }  
+ 
+    else 
+      {
+      start_time = clock();
+      for (i = 0; i < timeitm; i++)
+        {
+        PCRE2_MATCH(capcount, compiled_code, pp, ulen,
+          dat_datctl.offset, dat_datctl.options | g_notempty, match_data,
+          dat_context);
+        }
       }   
     total_match_time += (time_taken = clock() - start_time);
     fprintf(outfile, "Match time %.4f milliseconds\n",
@@ -4748,8 +4806,12 @@ for (gmatched = 0;; gmatched++)
       }
     else
       {
-      PCRE2_MATCH(capcount, compiled_code, pp, ulen, dat_datctl.offset,
+      if ((pat_patctl.control & CTL_JITFAST) != 0)
-        dat_datctl.options | g_notempty, match_data, dat_context);
+        PCRE2_JIT_MATCH(capcount, compiled_code, pp, ulen, dat_datctl.offset,
+          dat_datctl.options | g_notempty, match_data, dat_context, jit_stack);
+      else   
+        PCRE2_MATCH(capcount, compiled_code, pp, ulen, dat_datctl.offset,
+          dat_datctl.options | g_notempty, match_data, dat_context);
       if (capcount == 0)
         {
         fprintf(outfile, "Matched, but too many substrings\n");

testdata/testinput16

@@ -22,6 +22,12 @@
     ab\=ph
     xyz
 
+/abcd/jitfast
+    abcd
+    ab\=ps
+    ab\=ph
+    xyz
+
 /abcd/jit=1
     abcd
     ab\=ps
@@ -29,12 +35,25 @@
     xyz
     xyz\=ps
 
+/abcd/jit=1,jitfast
+    abcd
+    ab\=ps
+    ab\=ph
+    xyz
+    xyz\=ps
+
 /abcd/jit=2
     abcd
     ab\=ps
     ab\=ph
     xyz
 
+/abcd/jit=2,jitfast
+    abcd
+    ab\=ps
+    ab\=ph
+    xyz
+
 /abcd/jit=3
     abcd
     ab\=ps
@@ -108,6 +127,10 @@
 /^(?>(a+))(?>b+)(?>(c+))(?>d+)(?>(e+))/
      aabbccddee\=find_limits
 
+/^(?>(a+))(?>b+)(?>(c+))(?>d+)(?>(e+))/jitfast
+     aabbccddee\=find_limits
+     aabbccddee\=jitstack=1
+
 /(a+)*zz/
     aaaaaaaaaaaaaz
     aaaaaaaaaaaaaz\=match_limit=3000
@@ -134,4 +157,16 @@
 /(?(R)a*(?1)|((?R))b)/
     aaaabcde
     
+# Invalid options disable JIT when called via pcre2_match(), causing the
+# match to happen via the interpreter, but for fast JIT invalid options are
+# ignored, so an unanchored match happens.
+
+/abcd/jit
+    abcd\=anchored
+    fail abcd\=anchored 
+    
+/abcd/jitfast
+    abcd\=anchored 
+    succeed abcd\=anchored 
+    
 # End of testinput16

testdata/testoutput16

@@ -38,6 +38,16 @@ Partial match: ab (JIT)
     xyz
 No match (JIT)
 
+/abcd/jitfast
+    abcd
+ 0: abcd (JIT)
+    ab\=ps
+Partial match: ab (JIT)
+    ab\=ph
+Partial match: ab (JIT)
+    xyz
+No match (JIT)
+
 /abcd/jit=1
     abcd
  0: abcd (JIT)
@@ -50,6 +60,18 @@ No match (JIT)
     xyz\=ps
 No match
 
+/abcd/jit=1,jitfast
+    abcd
+ 0: abcd (JIT)
+    ab\=ps
+Failed: error -43: bad JIT option
+    ab\=ph
+Failed: error -43: bad JIT option
+    xyz
+No match (JIT)
+    xyz\=ps
+Failed: error -43: bad JIT option
+
 /abcd/jit=2
     abcd
  0: abcd
@@ -60,6 +82,16 @@ Partial match: ab
     xyz
 No match
 
+/abcd/jit=2,jitfast
+    abcd
+Failed: error -43: bad JIT option
+    ab\=ps
+Partial match: ab (JIT)
+    ab\=ph
+Failed: error -43: bad JIT option
+    xyz
+Failed: error -43: bad JIT option
+
 /abcd/jit=3
     abcd
  0: abcd (JIT)
@@ -207,6 +239,14 @@ Minimum match limit = 6
  2: cc
  3: ee
 
+/^(?>(a+))(?>b+)(?>(c+))(?>d+)(?>(e+))/jitfast
+     aabbccddee\=find_limits
+Minimum match limit = 6
+ 0: aabbccddee (JIT)
+ 1: aa
+ 2: cc
+ 3: ee
+
 /(a+)*zz/
     aaaaaaaaaaaaaz
 No match (JIT)
@@ -261,4 +301,20 @@ Failed: error -44: JIT stack limit reached
     aaaabcde
 Failed: error -44: JIT stack limit reached
     
+# Invalid options disable JIT when called via pcre2_match(), causing the
+# match to happen via the interpreter, but for fast JIT invalid options are
+# ignored, so an unanchored match happens.
+
+/abcd/jit
+    abcd\=anchored
+ 0: abcd
+    fail abcd\=anchored 
+No match
+    
+/abcd/jitfast
+    abcd\=anchored 
+ 0: abcd (JIT)
+    succeed abcd\=anchored 
+ 0: abcd (JIT)
+    
 # End of testinput16