Added more instructions to generate code. Generated for cuDNN7.1 from scratch

Author: chewxy

cmd/gencudnn/README.md

@@ -0,0 +1,37 @@
+
+1. Preprocess the cudnn file: `gcc -E -P cudnn_.h > cudnn.h`
+2. Add the following "headers" to cheat the compiler:
+	```
+		typedef long int ptrdiff_t;
+		typedef long unsigned int size_t;
+		typedef long unsigned int rsize_t;
+		typedef int wchar_t;
+		typedef long double max_align_t;
+		struct dummy;
+		typedef struct dummy cudaStream_t;
+	```
+3. Delete the following debug related stuff (only cuDNN 7.1+):
+	```
+	typedef struct {
+	    unsigned cudnn_version;
+	    cudnnStatus_t cudnnStatus;
+	    unsigned time_sec;
+	    unsigned time_usec;
+	    unsigned time_delta;
+	    cudnnHandle_t handle;
+	    cudaStream_t stream;
+	    unsigned long long pid;
+	    unsigned long long tid;
+	    int cudaDeviceId;
+	    int reserved[15];
+	} cudnnDebug_t;
+	typedef void (*cudnnCallback_t) (cudnnSeverity_t sev, void *udata, const cudnnDebug_t *dbg, const char *msg);
+cudnnStatus_t cudnnSetCallback(
+                                unsigned mask,
+                                void *udata,
+                                cudnnCallback_t fptr);
+cudnnStatus_t cudnnGetCallback(
+                                unsigned *mask,
+                                void **udata,
+                                cudnnCallback_t *fptr);
+	```

cmd/gencudnn/main.go

@@ -5,6 +5,7 @@ import (
 	"io"
 	"log"
 	"os/exec"
+	"sort"
 	"strings"
 
 	"os"
@@ -63,7 +64,7 @@ func main() {
 	// Step 2: generate mappings for this package, then edit them manually
 	// 	Specifically, the `ignored` map is edited - things that will be manually written are not removed from the list
 	//	Some enum map names may also be changed
-	// generateMappings(true)
+	generateMappings(true)
 
 	// Step 3: generate enums, then edit the file in the dnn package.
 	// generateEnums()
@@ -117,8 +118,13 @@ func reportUnconvertedFns(pkg *PkgState, file string, things ...bindgen.FilterFu
 		}
 
 	}
-	fmt.Printf("## Unconverted C Functions ##\n\n")
+	keys := make([]string, 0, len(allFuncs))
 	for k := range allFuncs {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+	fmt.Printf("## Unconverted C Functions ##\n\n")
+	for _, k := range keys {
 		if _, ok := used[k]; !ok {
 			fmt.Printf("* `%v`\n", k)
 		}
@@ -140,9 +146,13 @@ func reportUnconvertedTypes(pkg *PkgState, file string, things ...bindgen.Filter
 			allTypes[name] = struct{}{}
 		}
 	}
-
-	fmt.Printf("## Unconverted/Unused C Types ##\n\n")
+	keys := make([]string, 0, len(allTypes))
 	for k := range allTypes {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+	fmt.Printf("## Unconverted/Unused C Types ##\n\n")
+	for _, k := range keys {
 		if _, ok := used[k]; !ok {
 			fmt.Printf("* `%v`\n", k)
 		}