修改czcore多进程为pool模式，修复多进程不返回结果问题

pyat/czcore.py

@@ -1,5 +1,6 @@
 # -*- coding: utf-8 -*-
-from multiprocessing import Process
+from multiprocessing import Process, Pool
+from functools import partial
 from os import system
 import numpy as np
 from pyat.AcousticPara import GetEnv, Coord
@@ -296,6 +297,18 @@ def call_fangwei(freq, sd, rd, bathm, ssp, sed, base, azi, isPlot=False):
         czdetail.reflectCz = []
     return Pos.r.range, Pos.r.depth, TL[0, 0, :, :], bathm, Rays, czdetail
 
+def child(database, freq, lat, lon, sd, rd, i):
+    descripts = ["正北方向", "东北方向", "正东方向", "东南方向", "正南方向", "西南方向", "正西方向", "西北方向"]
+    theta = np.arange(0, 359, 45)
+    [bathm, ssp, sed, base] = GetEnv(database, 25, Coord(lon, lat), R=100, azi=theta[i])
+    if np.mean(bathm.d) < 2000:
+        # 不会出现会聚区
+        ddd=[]
+        return None
+    else:
+        ranges, depths, TL, bathym, Rays, czdetail = call_fangwei(freq, sd, rd, bathm, ssp, sed, base, azi=theta[i],isPlot=True)
+        czdetail.descript = descripts[i]
+        return CzData(theta[i], ranges, depths, TL, bathym, Rays, czdetail)
 
 def call_cz(database, freq, lat, lon, azi, sourceDepth=10, receiveDepth=10, isPlot=False):
     sd = np.array([sourceDepth])  # Source depth
@@ -303,29 +316,17 @@ def call_cz(database, freq, lat, lon, azi, sourceDepth=10, receiveDepth=10, isPl
 
     results = []
     ranges, depths, TL, bathym, Rays = [], [], [], [], []
-    def child(i):
-        descripts = ["正北方向", "东北方向", "正东方向", "东南方向", "正南方向", "西南方向", "正西方向", "西北方向"]
-        theta = np.arange(0, 359, 45)
-        [bathm, ssp, sed, base] = GetEnv(database, 25, Coord(lon, lat), R=100, azi=theta[i])
-        if np.mean(bathm.d) < 2000:
-            # 不会出现会聚区
-            ddd=[]
-        else:
-            ranges, depths, TL, bathym, Rays, czdetail = call_fangwei(freq, sd, rd, bathm, ssp, sed, base, azi=theta[i],isPlot=True)
-            czdetail.descript = descripts[i]
-            results.append(CzData(theta[i], ranges, depths, TL, bathym, Rays, czdetail))
-            return results
 
-    def child_0(interval):
-        results=child(interval)
-        return results
+    # def child_0(interval):
+    #     czdata=child(interval)
+    #     return czdata
     ''' 计算单个方向的会聚区 '''
     if azi != None:
         [bathm, ssp, sed, base] = GetEnv(database, 25, Coord(lon, lat), R=100, azi=azi)
         if np.mean(bathm.d) < 2000:
-            return results
+            return None
         else:
-            ranges, depths, TL, bathym, Rays, czdetail = call_fangwei(freq, sd, rd, bathm, ssp, sed, base,
+            ranges, depths, TL, bathym, Rays, czdetail = call_fangwei(freq, sd, rd, bathm, ssp, sed, base, azi,
                                                                       isPlot=isPlot)
             czdetail.descript = "{:.1f}°方向".format(azi)
             results.append(CzData(0, ranges, depths, TL, bathym, Rays, czdetail))
@@ -337,7 +338,14 @@ def call_cz(database, freq, lat, lon, azi, sourceDepth=10, receiveDepth=10, isPl
         # file_cz_data.write("各个方位都不会出现会聚区")
         return results
     else:
+        pool = Pool(processes=8)
+        applyResults = []
         for pi in range(8):
-            pi=Process(target=child_0,args=(pi,))
-            pi.start()
+            applyResults.append(pool.apply_async(partial(child, database, freq, lat, lon, sd, rd), (pi,)))
+            # pi=Process(target=child_0,args=(pi,))
+            # pi.start()
+        pool.close()
+        pool.join()
+        for applyResult in applyResults:
+            results.append(applyResult.get())
         return results